Udemy 2 Flashcards
Question 51:
A customer is complaining that they cannot connect to the local network share drive. You run the command ‘ipconfig /all’ from their workstation, and it returns an IP of 169.254.34.12. Which of the following is the problem with this workstation?
The workstation couldn’t reach the gateway
The workstation couldn’t reach the DNS server
The workstation couldn’t reach the proxy server
The workstation couldn’t reach the DHCP server
The workstation couldn’t reach the gatewayThe workstation couldn’t reach the DNS serverThe workstation couldn’t reach the proxy serverCorrect answerThe workstation couldn’t reach the DHCP serverOverall explanationOBJ-5.7: Since the customer’s IP address is 169.254.34.12, it is an APIPA address. Since the workstation has an APIPA address, it means the DHCP server was unreachable. Automatic Private IP Addressing (APIPA) is a feature of Windows-based operating systems that enables a computer to automatically assign itself an IP address when there is no Dynamic Host Configuration Protocol (DHCP) server available to perform that function. APIPA serves as a DHCP server failover mechanism and makes it easier to configure and support small local area networks (LANs). If no DHCP server is currently available, either because the server is temporarily down or because none exists on the network, the computer selects an IP address from a range of addresses (from 169.254.0.0 - 169.254.255.255) reserved for that purpose.Domain5 - Hardware and Network Troubleshooting
Question 52:
Which of the following types of memory relies on temporary storage space on the hard drive that is used when there is insufficient physical memory available to perform a given task?
SODIMM
ECC
Virtual memory
VRAM
SODIMMECCCorrect answerVirtual memoryVRAMOverall explanationOBJ-3.2: Virtual memory is an area on the hard disk allocated to contain pages of memory. When the operating system doesn’t have sufficient physical memory (RAM) to perform a task, pages of memory are swapped to the paging file. This frees physical RAM to enable the task to be completed. When the paged RAM is needed again, it is re-read into memory. VRAM (video RAM) refers to any type of random access memory (RAM) specifically used to store image data for a computer display. A small outline dual inline memory module (SODIMM) can be purchased in various types and sizes to fit any laptop, router, or other small form factor computing device. Error checking and correcting or error correcting code (ECC) is a type of system memory that has built-in error correction security. ECC is more expensive than normal memory and requires support from the motherboard. ECC is commonly used in production servers and not in standard desktops or laptops.Domain3 - Hardware
Question 53:
An employee’s laptop has become warm to the touch and does not sit evenly on the table during use. You turn the laptop over and see the case bulging into a slightly rounded shape. What is the MOST likely cause of this issue?
RAM is defective
Battery is defective
Keyboard is defective
Wireless card is defective
RAM is defectiveCorrect answerBattery is defectiveKeyboard is defectiveWireless card is defectiveOverall explanationOBJ-5.5: Based on the description, the battery is defective and swelling. Swollen batteries, while not common, are a significant risk. They result from too much current inside a cell of the battery, which causes a build-up of heat and gas. This can be caused by overcharging, manufacturer defects, deep discharge, or damage to the battery. The most common cause is an overcharge of the battery, which causes a chemical reaction between the electrodes and the electrolyte, resulting in the release of heat and gases that expand inside the battery, causing the casing to swell or split open. If a battery begins to bulge, swell, or split, it should immediately be replaced.Domain5 - Hardware and Network Troubleshooting
Question 54:
An administrator arrives at work and is told that network users are unable to access the shared drive on a Windows server. The administrator logs into the server and sees that some Windows Updates were automatically installed last night successfully, but now the network connection shows “limited” with no availability. What rollback action should the technician perform?
Server’s NIC drivers
Server’s IP address
Antivirus updates
Web browser
Correct answerServer’s NIC driversServer’s IP addressAntivirus updatesWeb browserOverall explanationOBJ-5.7: When automatically receiving updates through the Windows Update service, your server can receive driver updates for its network interface card (NIC), graphics cards, and other peripherals. This can accidentally install an incompatible driver that causes network connectivity issues to occur. A best practice is to always set driver updates to “manual” so that you can download and test them in a lab before upgrading your production servers. If your drivers were updated and this is causing the connectivity issue, you can perform a driver rollback to the last known working version of the drivers. An IP address is bound to a network interface card using DHCP and there is no such thing as a “rollback” for a server’s IP address. The error of “limited” connectivity is associated with the network interface card and the network connection, not the antivirus or the web browser.Domain5 - Hardware and Network Troubleshooting
Question 55:
Which of the following cables is MOST widely used by modern Android smartphones and tablets?
Mini USB
Micro USB
Lightning
USB-C
Mini USBMicro USBLightningCorrect answerUSB-COverall explanationOBJ-1.3: Modern Android devices most commonly use USB-C connections. USB-C is the default standard used in USB 3.1 with a 24-pin connector. The connector is reversible and can be inserted in either direction. Before USB-C, Android devices used either Micro USB or Mini USB connectors. Micro USB is a miniaturized version of the Universal Serial Bus (USB) interface developed for connecting compact and mobile devices such as smartphones, Mp3 players, GPS devices, photo printers, and digital cameras. Micro USB connectors exist or have existed in three forms: micro A, micro B, and micro USB 3. Mini USB was introduced with USB 2.0 and was used with digital cameras and early tablets. Mini USB is not commonly used in modern devices. Android devices do NOT use the lightning cable because it is a proprietary 8-pin port and connector used solely by Apple devices. The Lightning connector is reversible and can be inserted in either direction. Lightning is a proprietary computer bus and power connector created by Apple. The lightning cable is used by every iPhone from the 5 to 13 series. Newer iPads have shifted to the use of USB-C for charging instead of the lightning cable, though.Domain1 - Mobile Devices
Question 56:
Which of the following devices should you purchase for a child if you want them to be able to read books and magazines, but you do not want them to be able to surf the web or play games?
Tablet
Smartphone
E-reader
Laptop
TabletSmartphoneCorrect answerE-readerLaptopOverall explanationOBJ-1.2: An e-Reader is a tablet-sized device designed for reading rather than general-purpose computing. For example, the Amazon Paperwhite is an example of a traditional e-Reader. Unlike a tablet, an e-reader is designed for the sole purpose of reading digital books and magazines (with perhaps the option to add annotations). E-readers use electrophoretic ink (e-ink) technology to create an Electronic Paper Display (EPD). Compared to the LED or OLED display used on a tablet, an EPD has low power consumption but facilitates high contrast reading in various ambient light conditions. These screens do not need to use a backlight in typical conditions, saving power and extending battery life.Domain1 - Mobile Devices
Question 57:
Which of the following types of hard drives would be used in a gaming laptop to increase the system’s boot-up performance while providing a large amount of storage at a lower overall cost?
Magnetic drive
Optical drive
SSD
Hybrid drive
Magnetic driveOptical driveSSDCorrect answerHybrid driveOverall explanationOBJ-1.1: A hybrid hard drive (SSHD) is a storage drive that combines the large storage capacity of an HDD with the faster read/write speed of an SSD. The majority of the drive uses a spinning disk and actuator arm, like a traditional magnetic drive, but it also contains a small SSD (solid-state drive) as part of the combined hybrid drive unit. This allows data to be written to either the SSD portion (for data accessed more frequently like the OS and programs) while using the HDD portion to store larger amounts of rarely accessed files (such as photos and video files). Hybrid hard drives constantly monitor the data retrieved from storage, and it automatically determines which data you open the most. It places the files that you use most often on the SSD to read/write that data faster. A magnetic drive is a traditional hard disk drive (HDD). A hard disk drive (HDD) is a device providing persistent mass storage for a workstation or laptop by saving data even when the computer is turned off. Data is stored using platters with a magnetic coating that are spun under disk heads that can read and write to locations on each platter known as sectors. A solid-state drive (SSD) is a personal computer storage device that stores data in non-volatile special memory instead of on disks or tape. An optical drive is a storage device that uses a CD, DVD, or Blu-Ray disc to store and retrieve data.Domain1 - Mobile Devices
Question 58:
A penetration tester wants to build a workstation that will be used to brute force hash digests. Which of the following is the BEST option to ensure sufficient power and speed to crack them?
Multi-core CPU
Dedicated GPU
7200-RPM HDD
Integrated GPU
Multi-core CPUCorrect answerDedicated GPU7200-RPM HDDIntegrated GPUOverall explanationOBJ-3.4: Dedicated GPUs are designed to conduct complex mathematical functions extremely quickly. If you want to build a system to perform the cracking of a password, hash, or encryption algorithm, it is important to have a high-speed, dedicated GPU. The reason to use a GPU instead of a CPU for password cracking is that it is much faster for this mathematically intensive type of work. Cracking passwords, hashes, and encryption is a lot like mining cryptocurrency in that using dedicated GPUs will give you the best performance.Domain3 - Hardware
Question 59:
What is the lowest layer (bottom layer) of a bare-metal virtualization environment?
Hypervisor
Guest operating system
Physical hardware
Host operating system
HypervisorGuest operating systemCorrect answerPhysical hardwareHost operating systemOverall explanationOBJ-4.2: The bottom layer is physical hardware in this environment. It is what sits beneath the hypervisor and controls access to guest operating systems. The bare-metal approach doesn’t have a host operating system. A hypervisor is a program used to run and manage one or more virtual machines on a computer. A host operating system is an operating system that is running the hypervisor. A host operating system is an operating system that is running the hypervisor.Domain4 - Virtualization and Cloud Computing
Question 60:
Which of the following technologies is often used indoors by companies to locate a shopper’s position in a store and provide them time-sensitive offers or discounts?
GPS
Cellular
Bluetooth
Wi-Fi
GPSCellularCorrect answerBluetoothWi-FiOverall explanationOBJ-1.4: A mobile device can use its internal GPS, cellular, Bluetooth, or Wi-Fi radios to identify its location. When indoors, the devices can use either Bluetooth or Wi-Fi to determine their location. Bluetooth can be used within a building to provide an accurate of the device within 3-4 meters. Bluetooth location services are often used to identify where in a store a customer is located and present them with targeted offers. For example, if the store identified that you were in the frozen foods section, they might send you a push notification offering you a discount on a pint of ice cream. Wi-Fi positioning systems use the signal strength or angle of arrival of a signal to determine the device’s location within 1-4 meters. The use of Bluetooth and Wi-Fi to determine the device’s location is known as an internal positioning system (IPS). Cellular radios can provide an approximate location based upon the triangulation of your position between different cellular towers. A GPS (global positioning system) device is used to determine a receiver’s position on the Earth based on information received from 24 GPS satellites, which operate in a constellation in Medium Earth Orbit (MEO). The receiver must have a line-of-sight to four of the GPS satellites continuously to accurately determine its position on the earth (latitude, longitude, and altitude). The device’s GPS receiver can provide an accurate location up to 10 meters.Domain1 - Mobile Devices
Question 61:
(This is a simulated PBQ. If you had this question on the real exam, you would be asked to drag-and-drop a label with the component’s name onto the proper location on the port cluster.)
Using the image above, which of the following correctly indicates the port labeled as H?
SATA
USB 3.0
FireWire
DVI
SATAUSB 3.0Correct answerFireWireDVIOverall explanationOBJ-3.1: This port is the FireWire port. FireWire is a serial SCSI connection that uses a D-shaped connector that supports up to 800 Mbps of bandwidth. For the exam, it is important that you can identify the different parts of a motherboard’s rear port cluster by sight.Domain3 - Hardware
Question 62:
(This is a simulated PBQ. If you had this question on the real exam, you would be asked to drag-and-drop a label with the component’s name onto the proper location on the motherboard.)
Using the image of the motherboard above, which of the following correctly indicates the circled area?
PATA connector
SATA connector
Front connector
Audio connector
Correct answerPATA connectorSATA connectorFront connectorAudio connectorOverall explanationOBJ-3.1: The area circled indicates the PATA connector on this motherboard. The parallel advanced technology attachment (PATA) used to be the main disk interface for computers until it was replaced by SATA connections. PATA was formerly called integrated drive electronics (IDE) or enhanced IDE (EIDE). Each PATA adapter supports two devices, commonly called primary and secondary. A PATA drive is connected to the bus by a 40-pin ribbon cable. For the exam, it is important that you can identify the different parts of the motherboard by sight.Domain3 - Hardware
Question 63:
Susan has a 3-year-old iPad. The iPad used to get 8 hours or more of usage before running out of battery, but now it only lasts 30-60 minutes between charges. Which of the following actions should be taken to repair this device?
Turn on airplane mode to reduce battery consumption
Replace the charging port
Replace the battery
Install the latest version of iOS
Turn on airplane mode to reduce battery consumptionReplace the charging portCorrect answerReplace the batteryInstall the latest version of iOSOverall explanationOBJ-5.5: Batteries on electronic devices can deteriorate over time and stop holding a full charge. In this question, the device was several years old, and the most likely cause is that the battery is old and needs replacement. The charging port is not the best answer since the question states that it is fully charged each time but only lasts 30-60 minutes. If the charging port were broken, the device would not charge at all. The other suggestions may help conserve the battery, but it wouldn’t explain a drop from 8 hours to 1 hour in battery life between charges.Domain5 - Hardware and Network Troubleshooting
Question 64:
Which of the following wiring standards should be used when installing ethernet cabling in an office or data center?
RS-232
RJ-11
RG-6
T-568B
RS-232RJ-11RG-6Correct answerT-568BOverall explanationOBJ-3.1: The T568A and T568B standards are used when installing ethernet cabling. If both ends of the cable use T568A, the cable being created is called a straight-through or patch cable. If one end of the cable is T568A and the other is T568B, then the cable is called a crossover cable. By default, the Department of Defense uses T568A writing on both ends of a cable, and most other organizations use the ANSI/TIA/EIA standards that use T568B on both ends of the cable. An RJ-11 connector is used to terminate cables used for phone lines. A DB-9 connector is used to terminate an RS-232 serial cable. RG-6 cabling is recommended for your Cable TV, satellite, TV antennas, or broadband internet.Domain3 - Hardware
Question 65:
Which of the following statements about the 5.0 GHz wireless frequency used by Wi-Fi is correct?
The 5.0 GHz frequency has a shorter wavelength that allows the signal to travel further than 2.4 GHz using the same power levels
The 5.0 GHz frequency supports lower data rates than 2.4 GHz
The 5.0 GHz frequency has more channels available than 2.4 GHz
The 5.0 GHz frequency is more effective at penetrating solid surfaces than 2.4 GHz
The 5.0 GHz frequency has a shorter wavelength that allows the signal to travel further than 2.4 GHz using the same power levelsThe 5.0 GHz frequency supports lower data rates than 2.4 GHzCorrect answerThe 5.0 GHz frequency has more channels available than 2.4 GHzThe 5.0 GHz frequency is more effective at penetrating solid surfaces than 2.4 GHzOverall explanationOBJ-2.3: The 5.0 GHz frequency has more individual channels giving it less congestion and interference than the 2.4 GHz frequency. The 5.0 GHz frequency supports higher data rates than the 2.4 GHz frequency due to lower levels of congestion and interference. The longer wavelength of 2.4 GHz makes it better at propagating through solid surfaces than the 5.0 GHz frequency. The 2.4 GHz frequency has a longer wavelength than the 5.0 GHz frequency. This longer wavelength gives the 2.4 GHz frequency the ability to cover a longer range using the same power output levels.Domain2 - Networking
Question 66:
Which of the following types of networking hardware is used to deliver broadband internet access using a fiber connection to the user’s home or office?
Digital subscriber line
Optical network terminal
Cable modem
Software-defined networking
Digital subscriber lineCorrect answerOptical network terminalCable modemSoftware-defined networkingOverall explanationOBJ-2.2: An optical network terminal (ONT) is a device that connects fiber optics cables to other types of wiring such as Ethernet and phone lines by converting the signal from optical to electrical and vice versa. An ONT is commonly used with fiber to the house (FTTH) installations. A cable modem is a type of network bridge that provides bi-directional data communication via radio frequency channels on a hybrid fiber-coaxial (HFC), radio frequency over glass (RFoG), and coaxial cable infrastructure. Cable modems are primarily used to deliver broadband internet access as cable internet, taking advantage of an HFC and RFoG network’s high bandwidth. DSL is a technology used to transmit multimedia traffic at high-bit rates over twisted-pair copper wire (over ordinary telephone lines). This allows the telecommunications company to connect a user’s home to the local switching center using normal telephone lines, then connect that local switching center (using a DSLAM to multiplex the connections) to the central office over a single high-speed cable (such as a fiber connection). Software-defined networking (SDN) is an approach to network management that enables dynamic, programmatically efficient network configuration to improve network performance and monitoring, making it more like cloud computing than traditional network management. Software-defined networking (SDN) uses Application Programming Interfaces (API) and compatible hardware that allows for the programming of network appliances and systems.Domain2 - Networking
Question 67:
You are troubleshooting a laptop’s display for a customer. The customer states that parts of the picture remain on the screen even after a full shutdown or reboot. You update the device drivers and recalibrate the display, but the problem remains with the laptop’s display. Which of the following is MOST likely the problem with the display?
Incorrect device drivers
Distorted geometry
Burn in
Dead pixels
Incorrect device driversDistorted geometryCorrect answerBurn inDead pixelsOverall explanationOBJ-5.4: Burn-in or image persistence is a discoloration of areas on an electronic display that causes a non-uniform use of the pixels that appears as an image remains after the screen is turned off or rebooted. While LCD and LED displays are not as likely as plasma and CRT monitors to suffer from burn-in, burn-in can still occur.Domain5 - Hardware and Network Troubleshooting
Question 68:
Dion Training has just installed a new hub/control system to control the lights, HVAC, and power to the devices in their studio. The new hub/control system relies on Zigbee for wireless communication and networking between the different devices. Which of the following types of networked hosts best describes what was installed?
Supervisory Control and Data Acquisition
DHCP server
Internet of Things
Syslog server
Supervisory Control and Data AcquisitionDHCP serverCorrect answerInternet of ThingsSyslog serverOverall explanationOBJ-2.4: Internet of Things (IoT) is a term used to describe a global network of appliances and personal devices that have been equipped with sensors, software, and network connectivity. IoT normally relies on Zigbee or Z-wave to facilitate the networking of the devices, including hub/control systems, smart devices, wearables, and sensors. Supervisory control and data acquisition is a control system architecture comprising computers, networked data communications, and graphical user interfaces for high-level supervision of machines and processes. A dynamic host configuration protocol (DHCP) server is a server configured with a range of addresses to lease. Hosts can be allocated an IP address dynamically or be assigned a reserved IP address based on the host’s MAC address. The server can also provide other configuration information, such as the location of DNS servers. A Syslog server is a server that collects diagnostic and monitoring data from the hosts and network devices across a given network.Domain2 - Networking
Question 69:
(This is a simulated PBQ. If you had this question on the real exam, you would be asked to drag-and-drop a label with the component’s name onto the proper location on the port cluster.)
Using the image above, which of the following correctly indicates the port labeled as B?
FireWire
SPDIF
USB
PS/2
FireWireSPDIFCorrect answerUSBPS/2Overall explanationOBJ-3.1: This port is the USB connection. Universal serial bus (USB) is the main type of connection interface used on desktops and laptops. A larger Type A connector attaches to a port on the host; Type B and Mini- or Micro-Type B connectors are used for devices. USB 1.1 supports 12 Mbps while USB 2.0 supports 480 Mbps and is backward compatible with 1.1 devices which run at a slower speed. USB devices are considered hot-swappable and each device can draw up to 2.5 W of power over a USB port. USB 3.0 and 3.1 define 5 Gbps (SuperSpeed) and 10 Gbps (SuperSpeed+) rates and can deliver up to 4.5 W of power. For the exam, it is important that you can identify the different parts of a motherboard’s rear port cluster by sight.Domain3 - Hardware
Question 70:
You have just set up an FTP server to allow users to download the new open-source application your company is releasing. Which port should be opened to allow users to connect to this server?
21
22
23
25
Correct answer21222325Overall explanationOBJ-2.1: The file transfer protocol (FTP) is the protocol used to transfer files across the internet over ports 20 and 21. Secure shell (SSH) is the protocol used for remote administration and file copying using TCP port 22. SSH is considered secure since it uses authenticated and encrypted sessions for communication. Telnet is the protocol used for remote command-line administration of a host using TCP port 23. Telnet is considered insecure since it is unauthenticated and unencrypted. The simple mail transfer protocol (SMTP) is the protocol used to send mail between hosts on the Internet using TCP port 25.Domain2 - Networking
Question 71:
What does VDI stand for?
Virtual Desktop Infrastructure
Virtual Desktop Instances
Virtualized Data Infrastructure
Virtual Desktop Integration
Correct answerVirtual Desktop InfrastructureVirtual Desktop InstancesVirtualized Data InfrastructureVirtual Desktop IntegrationOverall explanationOBJ-4.1: VDI (Virtual Desktop Infrastructure) centralizes instances for desktops that run on a single server utilizing the resources and performance from a single server. A thin client or an end-user then accesses the virtual desktops through a web browser. It is important to have sufficient resources on the central server to reduce lag time and provide an adequate user experience. VDI (Virtualized Desktop Infrastructure) is used in large enterprise businesses to focus on increasing their security and minimizing their operational expenses.Domain4 - Virtualization and Cloud Computing
Question 72:
Which of the following wireless standards should you implement if the existing wireless network only allows for three non-overlapping channels, and you need additional non-overlapping channels to prevent interference with neighboring businesses in your office building?
802.11b
802.11g
802.11ac
802.1q
802.11b802.11gCorrect answer802.11ac802.1qOverall explanationOBJ-2.7: Wireless B and G only support 3 non-overlapping channels (1, 6, 11). Wireless N and Wireless AC supports the 5 GHz spectrum, which provides 24 non-overlapping channels. The 801.q standard is used to define VLAN tagging (or port tagging) for Ethernet frames and the accompanying procedures to be used by bridges and switches in handling such frames. 802.1q is not a wireless networking standard.Domain2 - Networking
Question 73:
Which type of wireless network utilizes the 2.4 GHz frequency band and reaches speeds of up to 54 Mbps?
802.11g
802.11a
802.11n
802.11ax
802.11ac
802.11b
Correct answer802.11g802.11a802.11n802.11ax802.11ac802.11bOverall explanationOBJ-2.3: The 802.11g (Wireless G) standard utilizes a 2.4 GHz frequency to provide wireless networking at speeds up to 54 Mbps. The 802.11a (Wireless A) standard utilizes a 5 GHz frequency to provide wireless networking at speeds up to 54 Mbps. The 802.11b (Wireless B) standard utilizes a 2.4 GHz frequency to provide wireless networking at speeds up to 11 Mbps. The 802.11n (Wireless N) standard utilizes a 2.4 GHz frequency to provide wireless networking at speeds up to 108 Mbps or a 5.0 GHz frequency to provide wireless networking at speeds up to 600 Mbps. Wireless N supports the use of multiple-input-multiple-output (MIMO) technology to use multiple antennas to transmit and receive data at higher speeds. Wireless N supports channel bonding by combining two 20 MHz channels into a single 40 MHz channel to provide additional bandwidth. The 802.11ac (Wireless AC or Wi-Fi 5) standard utilizes a 5 GHz frequency to provide wireless networking at theoretical speeds up to 3.5 Gbps. Wireless AC uses channel bonding to create a single channel of up to 160 MHz to provide additional bandwidth. Wireless AC uses multi-user multiple-input-multiple-output (MU-MIMO) technology to use multiple antennas to transmit and receive data at higher speeds. The 802.11ax (Wireless AX or Wi-Fi 6) standard utilizes 2.4 GHz and 5.0 GHz frequencies to provide wireless networking at theoretical speeds up to 9.6 Gbps. Wireless AC uses orthogonal frequency-division multiple access (OFDMA) to conduct multiplexing of the frequencies transmitted and received to each client to provide additional bandwidth. Wireless AC uses channel bonding to create a single channel of up to 160 MHz to provide additional bandwidth. Wireless AC uses multi-user multiple-input-multiple-output (MU-MIMO) technology to use multiple antennas to transmit and receive data at higher speeds. Wireless AC also has a version called Wi-Fi 6E that supports the 6GHz frequency instead of the 2.4 GHz and 5.0 GHz frequencies used in Wi-Fi 6.Domain2 - Networking
Question 74:
What is a tool that would allow you to easily identify a network cable that was not labeled in the wiring closet during its installation?
Cable tester
Punchdown tool
Multimeter
Tone generator and probe
Cable testerPunchdown toolMultimeterCorrect answerTone generator and probeOverall explanationOBJ-2.8: A tone generator and toner probe is an excellent tool that allows you to easily detect which cable goes to which port on a patch panel in a wiring closet. While you could use a cable tester (if both ends of the cable were available to the technician), a tone generator and probe are much more efficient at identifying cables that were not properly labeled. A tone generator is connected to a wall jack and sends a repeating signal over the cable. The probe can then be used to detect which cable is attached to the wall jack by detecting the signal being sent by the tone generator. The probe needs to be near or touch the cable with the tone generator attached to identify it positively. A cable tester is used to ensure a cable is properly created as a patch cable (straight through) or a crossover cable. Cable testers provide detailed information on the physical and electrical properties of the cable. For example, they test and report cable conditions, crosstalk, attenuation, noise, resistance, and other cable run characteristics. Punchdown tools are used to connect an ethernet cable to the back of a patch panel, a punchdown block, or the back of a network wall jack. A multimeter can measure the voltage, amperage, and resistance of a circuit. A multimeter can be a hand-held device useful for basic fault finding and field service work or a bench instrument that can measure electricity with a high degree of accuracy.Domain2 - Networking
Question 75:
You are trying to install Hyper-V on a new laptop, but you keep receiving an error during installation that the software cannot be installed. Which of the following characteristics of the laptop’s processor should you investigate as the MOST likely issue?
Number of cores available
Cache size
Hyper-threading (HT) technology
Virtualization (VT) support
Number of cores availableCache sizeHyper-threading (HT) technologyCorrect answerVirtualization (VT) supportOverall explanationOBJ-4.2: CPU Virtualization is a hardware feature found in all current AMD & Intel CPUs that allows a single processor to act as if it was multiple individual CPUs. This allows an operating system to more effectively & efficiently utilize the computer’s CPU power to run faster. This is enabled or disabled on supported processors within your system’s BIOS. HyperThreading (HT) is an Intel CPU architecture implemented to expose two or more logical processors to the OS to deliver performance benefits. The cache is an extremely fast internal memory located in the CPU. The number of cores is defined by the processor’s multicore capability such as dual-core, quad-core, or octo-core.Domain4 - Virtualization and Cloud Computing
Question 76:
Your boss asked you to generate a simple square code that can be easily scanned by a smartphone to access a preconfigured website address or link. Which of the following technologies would BEST meet this requirement?
Barcode
NFC chip
Smart card
QR code
BarcodeNFC chipSmart cardCorrect answerQR codeOverall explanationOBJ-1.3: In this case, you should select a QR code to meet this requirement. A QR code is a square that contains a specific graphical pattern that can be read by a smartphone’s camera. When read, the graphical pattern is converted to data, such as a website address or link that can be easily opened. QR codes can also be read by dedicated QR scanners, as well. A barcode is a pattern of different sized parallel bars, typically representing a product number, such as an ISBN, EAN, or UPC. The reader uses a sensor mechanism (typically either a photodiode, laser, or CCD) to read the intensity of light reflected by the barcode. The reader then reports the number back to application software, which links it to a product database. Near-field communication (NFC) is a set of communication protocols that enable two electronic devices, one of which is usually a portable device such as a smartphone, to establish communication by bringing them within 4 cm of each other. This is commonly used for contactless payment systems, transferring contacts, or transferring a file from one device to another. A smart card, chip card, or integrated circuit card is a physical, electronic authorization device used to control access to a resource. It is typically a plastic credit card-sized card with an embedded integrated circuit chip. In high-security environments, employee badges may contain a smart card embedded chip that must be inserted into a smart card reader to log in or access information on the system.Domain1 - Mobile Devices
Question 77:
Dion Training is upgrading its wired network from an older CAT5e network to a CAT 7 network. The network technician has run out of patch cables and asks you to create a straight-through patch cable. Which of the following tools is used to connect an RJ-45 connector to a patch cable?
Crimper
Cable stripper
Cable tester
Punchdown tool
Correct answerCrimperCable stripperCable testerPunchdown toolOverall explanationOBJ-2.8: A crimper is a tool used to attach an RJ-45 plastic connector to an unshielded twisted pair (UTP) or shielded twisted pair (STP) cable. It pushes a portion of the plastic into the jacket of the cable to hold it in place. The RJ-45 connection is the standard one used for wired ethernet networks. Punchdown tools are used to connect an ethernet cable to the back of a patch panel, a punchdown block, or the back of a network wall jack. A cable stripper is used to remove the plastic jacket from an ethernet cable to access its internal wires (twisted pairs). A cable tester is used to ensure a cable is properly created as a patch cable (straight through) or a crossover cable.Domain2 - Networking
Question 78:
Your company has decided to move all of its data into the cloud. Your company is concerned about the privacy of its data due to some recent data breaches that have been in the news. Therefore, they have decided to purchase cloud storage resources that will be dedicated solely for their use. Which of the following types of clouds is your company using?
Private
Public
Hybrid
Community
Correct answerPrivatePublicHybridCommunityOverall explanationOBJ-4.1: A private cloud contains services offered either over the Internet or a private internal network and only to select users instead of the general public. A private cloud is usually managed via internal resources. The terms private cloud and virtual private cloud (VPC) are often used interchangeably. A public cloud contains services offered by third-party providers over the public Internet and is available to anyone who wants to use or purchase them. They may be free or sold on-demand, allowing customers to pay only per usage for the CPU cycles, storage, or bandwidth they consume. A community cloud is a collaborative effort in which infrastructure is shared between several organizations from a specific community with common concerns (security, compliance, jurisdiction, etc.), whether managed internally or by a third party and hosted internally or externally. A community cloud is a collaborative effort in which infrastructure is shared between several organizations from a specific community with common concerns (security, compliance, jurisdiction, etc.), whether managed internally or by a third party and hosted internally or externally.Domain4 - Virtualization and Cloud Computing
Question 79:
Which of the following technologies uses 2.4 GHz or 5 GHz frequencies to determine your location indoors based on the signal strength received or the angle of arrival of that signal to the mobile device?
Wi-Fi
Bluetooth
Cellular
GPS
Correct answerWi-FiBluetoothCellularGPSOverall explanationOBJ-1.4: Location services enable the device to know its position using its internal GPS receiver or its approximate location using its cellular radio. A mobile device can use its internal GPS, cellular, Bluetooth, or Wi-Fi radios to identify its location. Wi-Fi positioning systems use the signal strength or angle of arrival of a signal to determine the device’s location within 1-4 meters. Bluetooth can be used within a building to provide an accurate of the device within 3-4 meters. The use of Bluetooth and Wi-Fi to determine the device’s location is known as an internal positioning system (IPS). Cellular radios can provide an approximate location based upon the triangulation of your position between different cellular towers. A GPS (global positioning system) device is used to determine a receiver’s position on the Earth based on information received from 24 GPS satellites, which operate in a constellation in Medium Earth Orbit (MEO). The receiver must have a line-of-sight to four of the GPS satellites continuously to accurately determine its position on the earth (latitude, longitude, and altitude). The device’s GPS receiver can provide an accurate location up to 10 meters.Domain1 - Mobile Devices
Question 80:
Which of the following types of networks would be created if a wireless access point, a microwave link, and a satellite link were combined in a mesh?
WAN
WMN
LAN
PAN
WANCorrect answerWMNLANPANOverall explanationOBJ-2.3: The 802.11s standard defines a Wireless Mesh Network (WMN). Unlike an ad hoc network, nodes in a WMN (called Mesh Stations) can discover one another and peer, forming a Mesh Basic Service Set (MBSS). The mesh stations can perform path discovery and forwarding between peers, using a routing protocol, such as the Hybrid Wireless Mesh Protocol (HWMP). A wireless mesh network (WMN) is a wireless network topology where all nodes, including client stations, can provide forwarding and path discovery to improve coverage and throughput compared to using just fixed access points and extenders. A wide area network (WAN) is a network that spans multiple geographic locations such as the internet. A local area network (LAN) is a network where all the nodes or hosts participating in the network are directly connected with cables or short-range wireless media. A personal area network (PAN) is a close-range network that is usually based on Bluetooth or NFC for communications between personal devices, such as smartphones, laptops, printers, and other peripheral devices.Domain2 - Networking
Question 81:
Dion Training recently hired a new graphic designer. You have been asked to install a new, high-end PCIe x16 graphics card into one of the standard corporate workstations so the new designer can get to work. After installing the card, you attempt to power on the computer. The computer makes some odd noises when you press the power button, but the monitor displays the words, ‘no source.’ What is MOST likely the issue?
The workstation is overheating due to the graphics card
The processor in the workstation isn’t powerful enough to support the card
The graphics card installed in the workstation was defective
The workstation’s power supply isn’t powerful enough to support the card
The workstation is overheating due to the graphics cardThe processor in the workstation isn’t powerful enough to support the cardThe graphics card installed in the workstation was defectiveCorrect answerThe workstation’s power supply isn’t powerful enough to support the cardOverall explanationOBJ-5.2: High-end graphics cards generally require additional power to operate. Most corporate workstations come with minimal power supplies (usually 250-300 watts) that cannot provide the additional power required to operate a high-end graphics card. In this case, the power supply should be upgraded to at least a 500-750 watt power supply to support the new graphics card.Domain5 - Hardware and Network Troubleshooting
Question 82:
Your office is located in a small office park, and you are installing a new wireless network access point for your employees. The companies in the adjacent offices are using Wireless B/G/N routers in the 2.4 GHz spectrum. Your security system uses the 5 GHz spectrum, so you have purchased a 2.4 GHz wireless access point to ensure you don’t cause interference with the security system. To maximize the distance between channels, which set of channels should you configure for use on your access points?
1, 7, 13
1, 6, 11
3, 6, 9
2, 6, 10
1, 7, 13Correct answer1, 6, 113, 6, 92, 6, 10Overall explanationOBJ-2.5: Wireless access points should always be configured with channels 1, 6, or 11 to maximize the distance between channels and prevent overlaps. Each channel on the 2.4 GHz spectrum is 20 MHz wide. The channel centers are separated by 5 MHz, and the entire spectrum is only 100 MHz wide. This means the 11 channels have to squeeze into the 100 MHz available, and in the end, overlap. Channels 1, 6, and 11, however, are far enough from each other on the 2.4GHz band that they have sufficient space between their channel centers and do not overlap.Domain2 - Networking
Question 83:
Jason’s cellphone company allows him to use his smartphone as a wireless hotspot with his laptop when traveling. Jason notices that if he runs a speed test from his smartphone, the cellular connection is 8761 kbps. If he runs the same speed test connection from his laptop connected to his cellphone over its wireless hotspot, the speed drops to 243 kbps. Which of the following is the MOST likely cause for the drop in the speed test results?
The SSID for the wireless hotspot is not being broadcast
The smartphone’s RFID signal is low
The laptop is out of range of the smartphone’s hotspot
The wireless hotspot feature is throttling the cellular connection speed
The SSID for the wireless hotspot is not being broadcastThe smartphone’s RFID signal is lowThe laptop is out of range of the smartphone’s hotspotCorrect answerThe wireless hotspot feature is throttling the cellular connection speedOverall explanationOBJ-5.7: Some cellular companies provide free mobile hotspots as part of their plans, but they will throttle the speeds provided by the hotspot. For example, T-Mobile in the United States can provide extremely fast cellular data connections from your smartphone, but they will throttle your hotspot connectivity to 256 kbps unless you purchase an additional high-speed option for your hotspot. The other options are all incorrect since any of those issues would cause the laptop to have no connectivity instead of the slow connectivity provided in the question.Domain5 - Hardware and Network Troubleshooting
Question 84:
While working as a technician, you are trying to help a customer whose PC cannot boot up. When the computer is turned on, an error stating “bootable device not found” appears on the screen. What should you attempt first?
Check Disk Management to see if the system drive is recognized
Boot into Recovery Mode and run the Bootrec /fixmbr command to fix the MBR that’s preventing the PC from booting
Verify that either the Molex or SATA cable is connected to the HDD
Press F12 to check the boot order and select the proper HDD to boot from
Check Disk Management to see if the system drive is recognizedBoot into Recovery Mode and run the Bootrec /fixmbr command to fix the MBR that’s preventing the PC from bootingCorrect answerVerify that either the Molex or SATA cable is connected to the HDDPress F12 to check the boot order and select the proper HDD to boot fromOverall explanationOBJ-5.3: The very first step we want to check is to check the physical connections. This falls under step two of the troubleshooting methodology (question the obvious). If a PC was recently moved or repaired, the cable may have become disconnected and is no longer powering the hard drive. When working with these cables, it is considered a best practice to ensure connections are present, remove the connection, and then reseat it to fix the issue effectively. If this doesn’t work, then the issue may be with the HDD itself.Domain5 - Hardware and Network Troubleshooting
Question 85:
Susan sees streaks of toner across her papers when printing documents using the laser printer in her office. What is the MOST likely solution for this problem?
Increase the temperature of the fuser element
Clean the printer’s transfer roller
Replace the toner cartridge in the printer
Change the feed rate of the paper
Increase the temperature of the fuser elementCorrect answerClean the printer’s transfer rollerReplace the toner cartridge in the printerChange the feed rate of the paperOverall explanationOBJ-5.6: The transfer roller is one of the most important components inside the printer, as it charges the toner in the drum before it transfers to the paper. If you see streaks of toner on your printouts, this is usually an indication of a dirty transfer roller. Consequently, occasionally cleaning the transfer roller can keep your printed documents clean and streak-free. You may print hundreds or even thousands of pages on your laser printer between toner cartridge changes, so it is prudent to clean the unit whenever you change the toner cartridge to keep used toner from building up and clogging the print mechanism.Domain5 - Hardware and Network Troubleshooting
Question 86:
What is the first step of the CompTIA troubleshooting methodology?
Establish a plan of action to resolve the problem and implement the solution
Test the theory to determine the cause
Establish a theory of probable cause (question the obvious)
Identify the problem
Establish a plan of action to resolve the problem and implement the solutionTest the theory to determine the causeEstablish a theory of probable cause (question the obvious)Correct answerIdentify the problemOverall explanationOBJ-5.1: For the exam, it is important that you can list and identify the 6 steps of the CompTIA troubleshooting methodology in order. (1) Identify the problem. (2) Establish a theory of probable cause (question the obvious). (3) Test the theory to determine the cause. (4) Establish a plan of action to resolve the problem and then implement the solution. (5) Verify full system functionality and, if applicable, implement preventative measures. (6) Document findings, actions, and outcomes.Domain5 - Hardware and Network Troubleshooting
Question 87:
A client states that their computer is experiencing slow performance when reading or writing to the hard drive. You have already verified that it is not a system (software) performance issue, and the system is not overheating. Which of the following would be the BEST action to take in attempting to fix this problem?
Upgrade the memory of the system
Clean the cooling fans of the system
Backup the hard drive
Run the disk repair tool
Upgrade the memory of the systemClean the cooling fans of the systemBackup the hard driveCorrect answerRun the disk repair toolOverall explanationOBJ-5.3: Slow performance can be a symptom of overheating or other problems. Since we eliminated overheating as the cause, the issue is most likely caused by a file system problem. To fix this problem, you should try running the disk repair tool or run the Disk Defragmenter tool (for non-SSD devices) to optimize the file system and read/write performance. Since there are no grinding or clicking sounds being observed, it is unlikely that the hard drive will fail soon making backing up the hard drive a lower priority. The system cooling fans are not the issue otherwise the system would be overheating.Domain5 - Hardware and Network Troubleshooting
Question 88:
Your friend just noticed their smartphone’s battery is running low. Unfortunately, your friend isn’t very knowledgeable about computers and smartphones, so they don’t know what type of charging cable they need. They know their phone is running iOS 15. What kind of cable does your friend need to charge their phone?
USB-C
Mini USB
Lightning
Micro USB
USB-CMini USBCorrect answerLightningMicro USBOverall explanationOBJ-1.3: Lightning cables are used by Apple’s iPhone, which are the only smartphones that run the iOS software. Since your friend is using iOS, he uses an iPhone (smartphone) or an older iPad (tablet). Lightning is a proprietary computer bus and power connector created by Apple. The lightning cable is used by every iPhone from the 5 to 13 series. Newer iPads have shifted to the use of USB-C for charging instead of the lightning cable, though. USB-C is the default standard used in USB 3.1 with a 24-pin connector. The connector is reversible and can be inserted in either direction. Micro USB is a miniaturized version of the Universal Serial Bus (USB) interface developed for connecting compact and mobile devices such as smartphones, Mp3 players, GPS devices, photo printers, and digital cameras. Micro USB connectors exist or have existed in three forms: micro A, micro B, and micro USB 3. Mini USB was introduced with USB 2.0 and was used with digital cameras and early tablets. Mini USB is not commonly used in modern devices.Domain1 - Mobile Devices
Question 89:
Jason’s cellphone company advertises that they offer unlimited data. The internet at Jason’s studio was not working today, so he turned on his mobile hotspot to upload the videos recorded today. Initially, the data transfer was occurring without any issues and Jason observed that his data was uploading at 25 Mbps. After 20-30 minutes, though, the speed of the connection dropped to only 0.125 Mbps. Which of the following is the MOST likely cause for this drop in speed during the upload process?
The smartphone is undergoing a DDoS attack
The smartphone’s battery has been depleted
The smartphone reached the data cap for the month
The smartphone’s 802.11 radio is broken
The smartphone is undergoing a DDoS attackThe smartphone’s battery has been depletedCorrect answerThe smartphone reached the data cap for the monthThe smartphone’s 802.11 radio is brokenOverall explanationOBJ-1.4: A data cap or bandwidth cap is a service-provider imposed limitation on the amount of data transferred by a user’s account or device over the cellular network. Many smartphone plans that advertise unlimited data still have a transfer limit. Once the limit is reached, these plans will either prevent all data transfer from occurring or slow down the speeds of data transfer. For example, T-Mobile offers unlimited data in the United States, but if a user transfers over 50GB of data then their data is deprioritized and transmitted at slower speeds. Other carriers will use a data throttling method, instead, which slows down all data sent for the remainder of the customer’s billing cycle. A distributed denial of service (DDoS) attack is a denial of service attack that uses multiple compromised computers, called zombies, to launch the attack against a target. Based on the scenario, there is no evidence that the smartphone’s battery is depleted since the phone is still online and transmitting data. The smartphone is not using Wi-Fi to transmit the data and there is no evidence that the 802.11 (Wi-Fi) radio is broken.Domain1 - Mobile Devices
Question 90:
You are working for a logistics company that needs to get a device that will automatically enter information about a package when it is read using light and a lens. Which of the following devices should you install to BEST support this requirement?
Digitizer
Barcode reader
Touch screen
Webcam
DigitizerCorrect answerBarcode readerTouch screenWebcamOverall explanationOBJ-1.3: A barcode scanner or barcode reader is a handheld or pen-shaped device designed to scan barcodes. A barcode is a pattern of different sized parallel bars, typically representing a product number, such as an ISBN, EAN, or UPC. The reader uses a sensor mechanism (typically either a photodiode, laser, or CCD) to read the intensity of light reflected by the barcode. The reader then reports the number back to application software, which links it to a product database. A webcam is a video camera that feeds or streams an image or video in real-time to or through a computer to a computer network, such as the Internet. Webcams are typically small cameras that sit on a desk, attach to a user’s monitor, or are built into a laptop, desktop, or mobile device. The digitizer is a touch-sensitive glass panel covering the LCD in a touchscreen assembly. The digitizer is used to convert touch events to digital signals that can be interpreted as different types of input. The digitizer can be touched and inspected without taking apart the device. A touch screen display provides the capability to use tactic actions to send input to a computer by interacting directly with the elements on the display using the person’s fingers.Domain1 - Mobile Devices
Question 1:
After replacing a motherboard on a customer’s laptop for a no-sound issue, a technician realizes that there is intermittent wireless connectivity on the laptop. Which of the following should the technician perform first?
Reinstall the driver of the Wi-Fi card
Check if the Wi-Fi antenna is connected properly to the wireless card
Check to see if there is a wireless switch on the laptop and its current position
Replace the wireless card because it is not fully compatible with the new motherboard
Reinstall the driver of the Wi-Fi cardCorrect answerCheck if the Wi-Fi antenna is connected properly to the wireless cardCheck to see if there is a wireless switch on the laptop and its current positionReplace the wireless card because it is not fully compatible with the new motherboardOverall explanationCorrect Answer: Check to make sure that the Wi-Fi antenna is properly connected to the wireless card. A loose connection might be the cause of an intermittent connectivity problem. Incorrect Answers: All the other answers would be solutions for permanent problems, but not intermittent ones.DomainMobile Devices
Question 2:
In a coffee shop, you overhear someone at the table behind you talking about a big project they’re working on to migrate all of the workloads currently handled by their company’s data centers to the cloud. What kind of service model are they most likely to use?
Platform as a service
Infrastructure as a service
Software as a service
Desktop as a service
Platform as a serviceCorrect answerInfrastructure as a serviceSoftware as a serviceDesktop as a serviceOverall explanationCorrect Answer: Since they need to effectively transfer everything being handled by their in-house data centers, it’s almost certain that they will need the flexibility and control provided by an infrastructure as a service (IaaS) provider. Incorrect Answer: Software as a service (SaaS) is not at all a suitable replacement for a datacenter. While some companies may get away with replacing their data centers with a platform as a service (PaaS) provider, this will only work if they need very little control over the infrastructure they create, the resources available to it, how it is networked, and so on. The same thing applies to desktop as a service (DaaS) providers; it would only work if their in-house data centers only exist for the purpose of on-premises virtual desktop infrastructure (VDI).DomainVirtualization and Cloud Computing
Question 3:
A technician is working on a PC and notices the error message “CMOS BATTERY LOW.” Exercising best practices, what should he do next?
Replace the battery with a CR-2032
Reseat the battery
Ignore the message and continue on
Disable the warning in CMOS
Correct answerReplace the battery with a CR-2032Reseat the batteryIgnore the message and continue onDisable the warning in CMOSOverall explanationCorrect Answer: Head down to your local electronics store and replace it with a CR-2032 battery. Ahhhh, feel that? That is the freshness of a new battery installed. Incorrect Answer: Ignoring the message and disabling the warning can certainly be done, but it would not be “best practices.” Reseating the battery will just lose all your CMOS settings. Since the system is telling you the battery is low, it is best practice to replace it.DomainHardware and Network Troubleshooting
Question 4:
What is the minimum capacity of a DVD?
3.47 GB
650 MB
4.37 GB
7.34 GB
3.47 GB650 MBCorrect answer4.37 GB7.34 GBOverall explanationCorrect: The minimum capacity of a DVD is 4.37 GB. Incorrect: 650 MB is the minimum capacity of a CD. 3.47 GB has nothing to do with DVD capacity and is made up. 7.34 GB is close to the capacity of a single-sided, dual-layer DVD, which is actually 7.95 GB.DomainHardware
Question 5:
Which port does SSH use?
3389
110
22
25
21
3389110Correct answer222521Overall explanationCorrect Answer: SSH uses port 22. Incorrect: POP3 uses port 110. RDP uses port 3389. FTP uses port 21. SMTP uses port 25.DomainNetworking
Question 6:
The finish line at a charity run needs to quickly and cheaply network two laptops using their built-in Ethernet ports. Of the following, which is the best way to do this?
Use a cheap 100BaseT switch.
Connect the two laptops using a crossover cable.
Set up a Bluetooth PAN.
Have each laptop connect to a common 802.11 network.
Use a cheap 100BaseT switch.Correct answerConnect the two laptops using a crossover cable.Set up a Bluetooth PAN.Have each laptop connect to a common 802.11 network.Overall explanationCorrect: Connect the two laptops using a crossover cable. A crossover cable is a specially wired cable that allows two Ethernet connections to work as a small network. Incorrect: Have each laptop connect to a common 802.11 network is incorrect. There is a 802.11 SSID mentioned, and the question was limited to the laptops to using Ethernet. Set up a Bluetooth PAN is incorrect. The question stated using Ethernet ports. Use a cheap 100BaseT switch is incorrect due to cost. A crossover cable would be less expensive than adding a switch.DomainHardware
Question 7:
Which kind of cloud service model best enables a small team of developers with no server administrators to develop and maintain a Web application?
DaaS
PaaS
IaaS
SaaS
DaaSCorrect answerPaaSIaaSSaaSOverall explanationCorrect Answer: A platform as a service (PaaS) greatly simplifies the available choices and takes on much of the work of managing installed operating systems and other software. Incorrect Answer: Desktop (Daas) and software as a service (SaaS) offerings aren’t focused on supporting software developers. Infrastructure as a service providers can support people developing a Web application, but they’ll still need to understand how to administer the systems they provision.DomainVirtualization and Cloud Computing
Question 8:
A technician is troubleshooting a customer’s problem over the phone. What would be the MOST approriate question to ask when troubleshooting the customer’s problem with her mouse?
Are you sure you plugged in the mouse?
Can you make sure all the PS/2 ports are in use?
Can you describe the steps you have taken so far?
Have you tried restarting the computer?
Are you sure you plugged in the mouse?Can you make sure all the PS/2 ports are in use?Correct answerCan you describe the steps you have taken so far?Have you tried restarting the computer?Overall explanationCorrect Answer: Can you describe the steps you have taken so far? This would be the best answer. You are asking the customer in a non-judgemental way if she can simply repeat the things she has done thus far to troubleshoot her problem. Knowing this will help you more than any of the other choices in diagnosing the problem. Incorrect Answers: Are you sure you plugged in the mouse? While you might be able to get away asking a family member this type of question. You probably won’t get away with it so easily when talking to a paying customer. This type of question can come across like you are talking to down to them. Can you make sure all the PS/2 ports are in use? Asking a question like this is good, however, we do not know what kind of mouse we are talking about here. It could very well be a USB mouse. Have you tried restarting the computer? We’ve been rocking default mouse drivers on Windows computers since the days of Windows 95. No amount of restarting will help them. Unless of course it is a PS/2 mouse, in which case they should have already have the computer powered down. DomainHardware and Network Troubleshooting
Question 9:
Kenneth has an 802.11n network. He only wants his three computers in the house to be able to access this network. Which of the following technologies would best enable him to do this?
Port filtering
MAC filtering
DMZ filtering
WPA filtering
Port filteringCorrect answerMAC filteringDMZ filteringWPA filteringOverall explanationCorrect: MAC filtering. MAC filtering creates allow or deny lists based on MAC addresses. Incorrect: WPA is a form of encryption, WPA is not a form of filtering. Filtering by TCP/UDP port number does not block particular systems. Many firewalls have the ability to filter ports based on IP address or MAC address using an Access Control List (ACL), but this isn’t to be confused with pure port blocking. A Demilitarized Zone (DMZ) is used to expose certain systems to the Internet. It does not limit access to wireless clients.DomainNetworking
Question 10:
Which of the following Internet services would you LEAST likely use with VoIP?
Satellite
Dial-up
DSL
Cable
Correct answerSatelliteDial-upDSLCableOverall explanationCorrect Answer: Satellite has more latency than just about any other internet connection out there. You should never use it when attempting to use VoIP. Incorrect Answers: Cable and DSL are both super fast. And while dial-up isn’t exactly fast, its latency issues aren’t as bad as satellite connections.DomainNetworking
Question 11:
While investigating a 4-year-old PC that is taking an unusually long time to boot, a technician discovers that the BIOS is rediscovering the hardware system at every boot. What should the technician do to resolve the problem?
Reset the BIOS using the CMOS reset jumper
Press “F9” while the computer is booting, but before the OS starts to load
At the OS level, launch Device Manager and re-scan the hardware
Change out the CMOS battery on the motherboard
Reset the BIOS using the CMOS reset jumperPress “F9” while the computer is booting, but before the OS starts to loadAt the OS level, launch Device Manager and re-scan the hardwareCorrect answerChange out the CMOS battery on the motherboardOverall explanationCorrect Answer: The CMOS battery is most likely dead or dying, so replacing it should fix the problem. The technician will also have to make any non-default CMOS settings that the user had previously set up. Incorrect Answers: Since this is a pre-boot problem, nothing in Windows will fix it. Pressing the F9 key during boot will bring up system recovery options for some brands of PC. It’s not really a standard shortcut, though. The BIOS is already resetting every time the PC boots, so manually resetting it won’t do a blessed thing.DomainHardware and Network Troubleshooting
Question 12:
Which of the following is the test we use to verify a NIC is sending and receiving packets correctly?
Parity
Loopback
Bit Error Rate Test
Checksum
ParityCorrect answerLoopbackBit Error Rate TestChecksumOverall explanationCorrect: A loopback test utilizes a loopback plug which is inserted into the NIC’s RJ-45 port. You then run a PING 127.0.0.1 or PING localhost to instruct the card to ping itself. Incorrect: A Bit Error Rate Test is used on high capacity voice lines such as T1 or T3. In computing, a checksum is most commonly a value placed on computer files to verify they haven’t been altered. Parity is an older testing method, sometimes seen in older high-end RAM, which uses an extra bit to test a set of data bits.DomainNetworking
Question 13:
A printer usually plugs into which of the following ports?
RG-6
USB
Mini-DIN
DB-9
RG-6Correct answerUSBMini-DINDB-9Overall explanationCorrect: A printer usually plugs into either a DB-25 or USB port. (Although some can use FireWire, it’s not as common.) Incorrect: Mini-DIN is for mice and keyboards. DB-9 is another name for the serial port, and while there were printers that could use the DB-9, it was much more common to use the DB-25 or USB ports.RG-6 is used for cable and satellite connections.DomainHardware
Question 14:
What connector was designed to connect your PC to a high-end television set?
VGA
HDMI
DB-HD
VESA
VGACorrect answerHDMIDB-HDVESAOverall explanationCorrect: HDMI was designed to connect your PC to a high-end television set. Incorrect: VGA is a 640x480 screen resolution. VESA is a type of mount for monitors and televisions. DB-HD is made up.DomainHardware
Question 15:
Which of the following wireless standards uses MIMO?
802.11n
802.11a
802.11g
802.11b
Correct answer802.11n802.11a802.11g802.11bOverall explanationCorrect Answer: Multiple-input and multiple-output is the use of multiple antennas at both the transmitter and receiver to improve communication performance. This is a huge part of how 802.11n is able to achieve its theoretical bandwidth of 600 Mbps. Incorrect Answers: 802.11a, 802.11b, and 802.11g do not make use of MIMO technology.DomainNetworking
Question 16:
You have just assembled your first PC. You hit the power button and the computer turns on. As the computer runs through POST, it starts beeping multiple times and you don’t see anything displayed on the LCD. You notice there are no activity lights flashing for the HDD. However, when you check the inside of the computer, you can hear the drive spinning up. What is the NEXT thing you are going to check in order to get the PC functioning?
Replace the LCD with one that functions
Reseat your Front Panel LEDs
Reseat your RAM
Change the jumper settings to C/S
Replace the LCD with one that functionsReseat your Front Panel LEDsCorrect answerReseat your RAMChange the jumper settings to C/SOverall explanationCorrect Answer: Reseat your RAM. Amongst the information you were able to gather from this scenario, making multiple beeps is an indication that the RAM is not seated correctly or worse yet… is bad! Incorrect Answers: Changing you hard drive settings to Cable Select (C/S) won’t effect your outcome of POST. Replacing the LCD monitor won’t change the lack of character on the screen because your RAM still needs to be seated. Reseating your Front Panel LED’s, while a good idea considering you don’t see hard drive activity, would not fix a no-boot situation like you are in.DomainHardware and Network Troubleshooting
Question 17:
Kenny and Kyle share a Windows system. Kenny installs a locally attached printer and makes Kyle a member of the Print Operator group. Kyle logs out and Kenny logs in. He opens a text file in Notepad and tries to print. Instead of printing on the printer, a dialog box opens asking for a filename. What’s wrong?
Kyle did not install the correct drivers when he was logged in.
Kyle needs to set his default printer to the new printer instead of the virtual XPS Document Writer.
Kenny has to make Kyle a member of the Administrator’s group.
Kyle needs to install the printer separately.
Kyle did not install the correct drivers when he was logged in.Correct answerKyle needs to set his default printer to the new printer instead of the virtual XPS Document Writer.Kenny has to make Kyle a member of the Administrator’s group.Kyle needs to install the printer separately.Overall explanationCorrect: Kyle needs to set his default printer to the new printer instead of the virtual XPS Document Writer. While Kyle will have access to the printer (whether he was set as a Printer Operator or not), he still needs to set the new printer as his default. Incorrect: Kenny has to make Kyle a member of the Administrator’s group. All local users have access to a new printer unless specifically denied. Kyle did not install the correct drivers when he was logged in. All local users use the same printer drivers. Kyle needs to install the printer separately. The printer will already be visible to Kyle.DomainHardware
Question 18:
How would you define an accelerometer?
Increases the speed of the CPU
It measures the velocity of the device
It tilts the screen when I rotate my iPad
Gives the device a longer battery life
Increases the speed of the CPUCorrect answerIt measures the velocity of the deviceIt tilts the screen when I rotate my iPadGives the device a longer battery lifeOverall explanationCorrect Answer: The definition of an accelerometer is a device that measures proper acceleration (speed, velocity). These devices are built-in to many of our mobile devices, including smart phones and tablets. We also see accelerometers in cars to monitor when a crash has occurred so that 911 can be called. We also see accelerometers in your Nintendo Wii controllers so you can play games! Incorrect Answers: An accelerometer will not give your device longer batter life or increase the speed of your CPU. An accelerometer does not tilt the screen on your iPad. The accelerometer measures and detects the tilt in your screen, iOS then performs a function to tilt the screen for you. DomainMobile Devices
Question 19:
Today’s portable computers invariably use which of the following battery technologies?
Nickel Cadmium (Ni-CD)
Alkaline
Nickel Metal Hydride (Ni-MH)
Lithium Ion (Li-Ion)
Nickel Cadmium (Ni-CD)AlkalineNickel Metal Hydride (Ni-MH)Correct answerLithium Ion (Li-Ion)Overall explanationCorrect: Lithium Ion (Li-Ion) is the dominant technology. Incorrect: Nickel Cadmium (Ni-CD) and Nickel Metal Hydride (Ni-MH) are earlier technologies no longer used in portable computers. Alkaline batteries cannot be used with any electronics that need constant voltage.DomainMobile Devices
Question 20:
Because she remembers you talking about your organization replacing its in-house support ticketing system with a monthly per-user subscription the company pays for, your friend Shirali messages to ask how it is working out. Which of the following best describes this subscription?
DaaS
SaaS
PaaS
IaaS
DaaSCorrect answerSaaSPaaSIaaSOverall explanationCorrect Answer: Software as a service (SaaS) is typically provided by another company in the form of a monthly or yearly subscription. Incorrect Answer: While some desktop as a service (DaaS) providers do sell something that works more or less like SaaS, this doesn’t describe a software ticketing system. Infrastructure as a service (IaaS) and platform as a service (PaaS) are both lower-level services. (Though someone looking to create a new SaaS product could use an IaaS or PaaS to do so.)DomainVirtualization and Cloud Computing
Question 21:
On a CPU, which of the following cache levels is the smallest?
L4
L2
L3
L1
L4L2L3Correct answerL1Overall explanationCorrect: The L1 cache is always the smallest and fastest of the CPU caches. Incorrect: The L2 and L3 caches are both larger and slower than the L1 cache. There is no such thing as an L4 cache in mainstream CPUs.DomainHardware
Question 22:
Which program is the best choice to use to clear the SSL cache?
Internet Explorer
Windows Update
Windows Firewall
Regedit
Correct answerInternet ExplorerWindows UpdateWindows FirewallRegeditOverall explanationCorrect Answer: While there’s more than one way to access Internet Options, of the choices given, only Internet Explorer is viable. Incorrect Answers: The other three options do not let you clear the SSL cache.DomainMobile Devices
Question 23:
What voltages does an ATX12V P1 connector provide for the motherboard?
3.3 V, 5 V
3.3 V, 5 V, 12 V
5 V, 12 V
3.3 V, 12 V
3.3 V, 5 VCorrect answer3.3 V, 5 V, 12 V5 V, 12 V3.3 V, 12 VOverall explanationCorrect: An ATX12V P1 connector provides 3.3 V, 5 V, and 12 V of power to the motherboard. Incorrect: 4-pin Molex connectors provide 5 V and 12 V of power. AUX connectors provide 3.3 V and 5 V of power.DomainHardware
Question 24:
When upgrading from a very basic graphics card to a powerful gaming graphics card, which of the following would you need to take into consideration first? (Select two.)
Will my power supply be able to support this card?
Do I have enough RAM for the video card?
Will the card fit into my case?
Can my CPU handle the extra work from the video card?
Correct selectionWill my power supply be able to support this card?Do I have enough RAM for the video card?Correct selectionWill the card fit into my case?Can my CPU handle the extra work from the video card?Overall explanationCorrect: A high-end gaming card tends to be large and usually needs extra power along with specialized power connectors. Incorrect: Good video cards will often reduce the overhead on your CPU and RAM. However, a new video card also opens up the possibility that you’ll be installing much more powerful games that tax your system.DomainHardware
Question 25:
Many mobile devices are Bluetooth-enabled. In order to use a Bluetooth device, it must be ______ to the mobile device.
Tethered
Linked
Paired
Hooked
TetheredLinkedCorrect answerPairedHookedOverall explanationCorrect Answer: Bluetooth devices must be “paired” together to work correctly. Incorrect Answers: All other answers are incorrect. Although they sound like the same idea, the correct term for utilizing Bluetooth is “paired”. Hooked or linked are not correct terms. Tethered generally refers to connection of devices for utilizing internet sharing. Although Bluetooth can be used to share internet, the best answer is paired. DomainMobile Devices
Question 26:
Albert is assembling a new PC from parts. When asked if he needed thermal compound, he glanced at his parts and said, “No.” Why would Albert say such a thing?
He’s using a polished heat sink on his CPU.
His fan comes with thermal compound pre-applied on the bottom of the heat sink.
His CPU doesn’t require thermal compound.
His CPU comes with thermal compound pre-applied on the top.
He’s using a polished heat sink on his CPU.Correct answerHis fan comes with thermal compound pre-applied on the bottom of the heat sink.His CPU doesn’t require thermal compound.His CPU comes with thermal compound pre-applied on the top.Overall explanationCorrect: His heat sink and fan come with thermal compound pre-applied on the bottom of the heat sink. Incorrect: All CPU-fan combinations on a modern PC require thermal compound. No heatsinks come with thermal compound pre-applied on the top of the heatsink.DomainHardware
Question 27:
What use does the function (Fn) key on a keyboard serve?
Activates multimedia functions
Enables access to safe mode
Used to turn off the monitor
Provides additional keyboard capabilities
Activates multimedia functionsEnables access to safe modeUsed to turn off the monitorCorrect answerProvides additional keyboard capabilitiesOverall explanationCorrect: The function (Fn) key, most common on laptops, is a generic key used to add a number of different keystroke capabilities to your keyboard, such as video output switching and turning wireless on/off. However, there is no fixed standard for the specific uses of this key. Incorrect answers: The other answers are possible functions of the Fn key (in combination with others) but are not the specific function of the Fn key.DomainMobile Devices
Question 28:
What is the first step you should take when replacing a network printer?
Notify all users before unplugging the printer
Delete all print jobs before replacing the printer
Unplug the network printer then notify users
Save all print jobs, replace the printer, and print all saved files
Correct answerNotify all users before unplugging the printerDelete all print jobs before replacing the printerUnplug the network printer then notify usersSave all print jobs, replace the printer, and print all saved filesOverall explanationCorrect Answer: Before unplugging any shared network resource, be sure to notify other users who might need to access it. It’s only polite. Incorrect Answers: Unplugging the printer before notifying the other users is not a good practice. Print jobs can stay in queue and can help prevent disruption to users. Saving or deleting print jobs is not a good practice. Networked printer generally have a queue that can prevent disruption to users.DomainHardware and Network Troubleshooting
Question 29:
Robert wants to have an Internet connection that will give him the lowest latency when viewing streaming videos. Which of these options should he choose LAST?
Satellite
T-1
Cable
DSL
Correct answerSatelliteT-1CableDSLOverall explanationCorrect Answer: Satellite connections have to travel almost 45,000 miles roundtrip, which can cause major latency issues when doing bandwidth-intensive applications. Incorrect Answers: Cable, DSL, and T-1’s are all wired connections. Latency will be lower using them.DomainNetworking
Question 30:
Zoe’s company has been having a recurring issue with systems on their network making mysterious outgoing connections to IP addresses associated with North Korea after hours, and they’ve finally decided to bring in a consultant to analyze all of the software that is present on every one of the systems that has made the outgoing connection. The consultant asks Zoe for a copy of the company’s main Windows disk image so that he can try each program out by itself on a fresh system. Which of the following is he least likely to do with the image?
Reimage a laptop, install the program, monitor the system for a few days, and repeat.
Use a large VM host and the disk image to create a separate virtual machine for every program, install the correct program in each, and leave them all running for monitoring.
Create a virtual machine from the disk image and snapshot it before installing anything, so that he can roll back to the snapshot after testing and analyzing each program.
Use Windows Server to set up many users with the same disk image, install a different program in each user account, and leave them all running for monitoring.
Reimage a laptop, install the program, monitor the system for a few days, and repeat.Use a large VM host and the disk image to create a separate virtual machine for every program, install the correct program in each, and leave them all running for monitoring.Create a virtual machine from the disk image and snapshot it before installing anything, so that he can roll back to the snapshot after testing and analyzing each program.Correct answerUse Windows Server to set up many users with the same disk image, install a different program in each user account, and leave them all running for monitoring.Overall explanationCorrect Answer: While separate user accounts on a single instance of Windows Server can be used as a kind of basic virtual desktop, each account isn’t a full VM with its own disk image. Incorrect Answer: While some are more or less efficient, the others are all ways the consultant might try to find the compromised software.DomainVirtualization and Cloud Computing
Question 31:
Rhonda’s Café wants to install a wireless network for customers to use. Which standard would enable the customers to enjoy the most bandwidth?
802.11n
802.11g
802.11a
802.11b
Correct answer802.11n802.11g802.11a802.11bOverall explanationCorrect: 802.11n is the fastest of the fast, with speeds theoretically in the 600 Mbps range. Incorrect: 802.11a runs at 54 Mbps. 802.11b runs at 11 Mbps. 802.11g runs at 54 Mbps.DomainNetworking
Question 32:
The technician is dispatched to look at a user’s laptop. The user reports the system shuts down after 30 minutes of field use. The technician notices the battery is not fully charging. Which of the following should the technician perform to resolve this?
Replace the battery
Change the power setting on the laptop to use less power
Discharge the battery using a static mat
Remove the battery and connect it to a commercial battery charger
Correct answerReplace the batteryChange the power setting on the laptop to use less powerDischarge the battery using a static matRemove the battery and connect it to a commercial battery chargerOverall explanationCorrect Answer: The first thing to do in this case is to replace the problem battery with another one to see if that battery starts charging. Incorrect Answers: It’s far easier and more helpful to test a new battery than to use a commercial charger. Putting a battery on an anti-static mat won’t actually discharge it. Changing the power settings just delays fixing the problem.DomainHardware and Network Troubleshooting
Question 33:
A user reports that her desktop PC shuts down 10 minutes after turning it on in the morning. When the technician moves the PC, it sounds like there are loose parts sliding around in the case. Which of the following is the most likely explanation for the PC shutting down?
The heat sink retaining clip has broken loose
The CMOS battery is bad
The hard drive cable has become unseated
A memory module has become unseated
Correct answerThe heat sink retaining clip has broken looseThe CMOS battery is badThe hard drive cable has become unseatedA memory module has become unseatedOverall explanationCorrect Answer: If the heat sink has come loose, the CPU will gradually build up heat until the it overheats and shuts off. You’d also hear the heatsink clunking around inside the case, letting you know that something’s loose in there! Incorrect Answers: A bad CMOS battery would just result in the CMOS settings resetting to their default values whenever the PC was restarted. An unseated memory module wouldn’t cause a PC to randomly shut down. A PC with a disconnected hard drive wouldn’t shut down; you just wouldn’t be able to access the hard drive in Windows.DomainHardware and Network Troubleshooting
Question 34:
Which of the following is the term for fire-resistant UTP cable?
PVC
Halon
Class C
Plenum
PVCHalonClass CCorrect answerPlenumOverall explanationCorrect: Plenum-rated cable is designed to resist burning, releasing far less smoke and noxious gasses than unprotected UTP cable. Incorrect: Class C is a rating for fire extinguishers that may be used on electrical fires. Halon is a type of chemical used to extinguish fires. PVC (Poly Vinyl Chloride) is a type of plastic and is also the name of unprotected UTP cabling.DomainHardware
Question 35:
Using your Web browser, you can access a number of Web sites. However, certain sites just give a screen saying, “You may not access this page.” Which of the following is the most likely reason for this?
The problem sites all require usernames and passwords
You do not have HTTPS enabled.
Your Web browser is using a proxy server
DNS is down on those sites.
The problem sites all require usernames and passwordsYou do not have HTTPS enabled.Correct answerYour Web browser is using a proxy serverDNS is down on those sites.Overall explanationCorrect: Your Web browser is using a proxy server. One of the main reasons for using a proxy server is to block unacceptable sites. The error described in the question is indicative of a proxy server. Incorrect: If DNS was down, your browser would not be able to find the website and would give an error to that effect. While it is possible to shut down HTTPS on your browser, it is highly unlikely. If the problem sites all required usernames and passwords, you would get a prompt for a username and password.DomainNetworking
Question 36:
A customer calls you and states that her laptop screen is very dim. In order to avoid going to the client’s site, which of the following is the first action you should recommend to the customer to perform?
Reboot the laptop
Increase the resolution
Use the function keys
Go to the Power Options in Control Panel
Reboot the laptopIncrease the resolutionCorrect answerUse the function keysGo to the Power Options in Control PanelOverall explanationCorrect Answer: Using the function keys enables you to change the brightness on your LCD screen.As this suggestion is easily the quickest and most simple fix among the bunch, you should try it first. Incorrect Answers: Increasing your resolution will change how many pixels are on the screen. Usually you just want to stick with your native resolution on a laptop, though. This won’t help a dim screen issue. Rebooting always sounds like a good idea, and a reset can solve some issues. Although it does not hurt, it takes a bit of time and would not be the first choice.Going to the power options in the Control Panel enables you to change settings for screen savers, standby, sleep, and other ACPI settings.DomainHardware and Network Troubleshooting
Question 37:
You are repairing a PC that won’t boot after you just replaced its PSU. What should you check next? (Choose two.)
HDD
CMOS setup settings
Motherboard
Graphics card
RAM
HDDCMOS setup settingsCorrect selectionMotherboardCorrect selectionGraphics cardRAMOverall explanationCorrect Answers: Motherboard & graphics cards have additional connectors that could cause a computer to not boot if they aren’t connected during the Power Supply Unit (PSU) replacement. Incorrect Answers: RAM does not need any additional power other than what the motherboard supplies to it. CMOS settings can’t be entered yet. It won’t boot! A hard disk drive (HDD), while incredibly important, is not necessary in the boot up process. DomainHardware and Network Troubleshooting
Question 38:
Steve adds a second 1-GB 240-pin DIMM to his PC, which should bring the total RAM in the system up to 2 GB. The PC has an Intel Core 2 Duo 3-GHz processor and three 240-pin DIMM slots on the motherboard. When he turns on the PC, however, only 1 GB of RAM shows up during the RAM count. Which of the following is most likely to be the problem?
Steve failed to seat the RAM properly.
The CPU cannot handle 2 GB of RAM.
Steve put DDR SDRAM in a DDR2 slot.
The motherboard can use only one RAM slot at a time.
Correct answerSteve failed to seat the RAM properly.The CPU cannot handle 2 GB of RAM.Steve put DDR SDRAM in a DDR2 slot.The motherboard can use only one RAM slot at a time.Overall explanationCorrect: Steve failed to seat the RAM properly. Incorrect: Different types of RAM are keyed differently, with different amounts of pins as well. It would be difficult to place a DDR stick in a DDR2 slot. The CPU can handle 2 GB of RAM. The motherboard can use more than one RAM slot at a time.DomainHardware
Question 39:
Which type of memory module has 200 pins?
SIMM
RIMM
DIMM
SO-DIMM
SIMMRIMMDIMMCorrect answerSO-DIMMOverall explanationCorrect: DDR and DDR2 SO-DIMMs have 200 pins. Incorrect: SIMMs have 30 or 72 pins. DIMMs have 168, 184, or 240 pins. RIMMs have 184 pins.DomainHardware
Question 40:
A user is having a difficult time printing certain types of documents to her laser printer. When she sends complex, mult-page, multi-color PDF files to the printer, it refuses to print. What is most likely the solution?
Flash the firmware of the laser printer
Update her printer driver from PCL to Post Script
Add more RAM to the laser printer
Add more RAM to her PC
Flash the firmware of the laser printerUpdate her printer driver from PCL to Post ScriptCorrect answerAdd more RAM to the laser printerAdd more RAM to her PCOverall explanationCorrect Answer: Throw more RAM in that printer. Quite often printers have sufficient RAM as purchased, but large print jobs can require printers to have additional RAM.Incorrect Answers: PCL drivers were created by Hewlett-Packard, while PostScript (PS) drivers are maintained by Adobe. They are both used by Raster Image Processor (RIP) to generate images for the printer. And while this could have an effect on printing, the fact that she is able to print some documents means that driver is working at some level. Flashing the firmware of the printer will not change the outcome of complex documents being printed. Adding more RAM to the PC, while ALWAYS a great idea, would not fix this issue, because this is a problem with the printer, not the computer.DomainHardware and Network Troubleshooting
Question 41:
You are troubleshooting a computer that reboots at strange times. Even when you try and access the CMOS setup, the computer will reboot. What should you check FIRST?
Check to see if your operating system is corrupted
Check to see if the case fan is spinning
Replace the CR-2032 battery
Check for blown capacitors
Check to see if your operating system is corruptedCheck to see if the case fan is spinningReplace the CR-2032 batteryCorrect answerCheck for blown capacitorsOverall explanationCorrect Answer: Do a google search for “blown capacitor” and you will see exactly what I’m talking about. That is a rough situation there. When this happens, it will short circuit the conductors that are carrying power, causing random reboots, among many other types of errors. Incorrect Answers: While checking to see if your case fan is spinning is a good idea, it’s not the FIRST thing to check for in this scenario. Replacing the CR-2032, or CMOS battery, won’t stop the reboots from happening. The battery only maintains settings in CMOS memory.Since the reboot is not isolated to the operating system, a corrupt operating system does not seem the first choice.DomainHardware and Network Troubleshooting
Question 42:
Which of the following is least likely to be a reason a company would choose to use a hybrid cloud setup?
To be prepared to move their services to a different well-known cloud provider if they don’t like a pricing or policy change.
To keep their services reliable during occasional surges of activity.
To limit their in-house data center investment to only enough capacity to handle the baseline workload.
To make their services more resilient during outages.
To take advantage of what each ownership model does best and avoid its weaknesses.
Correct answerTo be prepared to move their services to a different well-known cloud provider if they don’t like a pricing or policy change.To keep their services reliable during occasional surges of activity.To limit their in-house data center investment to only enough capacity to handle the baseline workload.To make their services more resilient during outages.To take advantage of what each ownership model does best and avoid its weaknesses.Overall explanationCorrect Answer: Since a hybrid cloud ownership model describes mixing two or more of the community, private, and public ownership models, using multiple public cloud providers isn’t technically a hybrid cloud. (Even if it is a good idea!) Incorrect Answer: A hybrid cloud setup can help a company use public cloud resources to handle surges in demand, limit the size of their data center to just what they can keep busy at all times, move services into the cloud if they have a local outage (or vice versa), and take advantage of what each ownership model does well.DomainVirtualization and Cloud Computing
Question 43:
Taylor wants to sync her new Android phone with her desktop PC. Which will give her the quickest and most reliable results?
RS-232
Bluetooth
IEEE-1394
USB
RS-232BluetoothIEEE-1394Correct answerUSBOverall explanationCorrect Answer: If Taylor wants to be able to connect her sweet new phone to her computer and get the fastest and most reliable connection, she’ll need USB. Incorrect Answers: Bluetooth, while reliable, is not very fast when compared to USB. IEEE-1394, or Firewire, is not supported by any Android phones. RS-232 is the classic serial port connector, but not utilized by modern phones.DomainMobile Devices
Question 44:
Which best illustrates the definition of geotracking?
It provides location information on mobile apps that use mapping functions.
It adds meta data to pictures taken with a mobile phone
It allows you to locate hidden treasures left by others around the world.
It allows you to track the location of a lost phone
Correct answerIt provides location information on mobile apps that use mapping functions.It adds meta data to pictures taken with a mobile phoneIt allows you to locate hidden treasures left by others around the world.It allows you to track the location of a lost phoneOverall explanationCorrect Answer: Geotracking provides location information to your mobile apps that make use of mapping functions. Incorrect Answers: Geotracking can find a lost phone using an app such as the Find iPhone app. Geotracking allows locating hidden treasures, also known as geocaching. Geotracking does add meta data to pictures taken with your mobile phone, also known as geotagging.DomainMobile Devices
Question 45:
When cleaning a computer monitor, always spray the cleaning solution on:
The front of the monitor
A thin sponge
A lint-free cloth
A polishing cloth
The front of the monitorA thin spongeCorrect answerA lint-free clothA polishing clothOverall explanationCorrect: Always spray the cleaning solution onto a lint-free cloth; never on the monitor itself. Incorrect answers: Polishing cloths and sponges aren’t as good as a simple lint-free cloth in this situation. A cleaning solution should never be sprayed on the monitor itself.DomainMobile Devices
Question 46:
A technician is working on an issue and has identified the problem and worked out the cause. Which of the following would most likely be the next step the technician should make?
Inform the user
Document the cause and solution
Establish a plan of action
Report to the supervisor
Inform the userDocument the cause and solutionCorrect answerEstablish a plan of actionReport to the supervisorOverall explanationCorrect Answer: Establish a plan of action is correct. Once you find out the problem, you must find a solution.Incorrect Answers: Documentation comes last. Inform the user after you’ve fixed the problem. Reporting to a supervisor isn’t part of the troubleshooting process. Only do it if you need to escalate a problem you can’t otherwise solve.DomainHardware and Network Troubleshooting
Question 47:
Which of the following best describes the shared resources that cloud providers make available to their customers on demand?
A resource-management system that enables users with unused resources free on their VMs to receive a credit on their bills for letting other users who need more capacity to temporarily share them.
A collection of resources supplied by many individual physical systems.
A resource-management system that enables users with their own on-site data centers who join the provider’s virtual private cloud to let the provider lease out their spare capacity in exchange for part of the profit.
A feature that enables users storing identical files to share the cost of hosting a single shared copy.
A resource-management system that enables users with unused resources free on their VMs to receive a credit on their bills for letting other users who need more capacity to temporarily share them.Correct answerA collection of resources supplied by many individual physical systems.A resource-management system that enables users with their own on-site data centers who join the provider’s virtual private cloud to let the provider lease out their spare capacity in exchange for part of the profit.A feature that enables users storing identical files to share the cost of hosting a single shared copy.Overall explanationCorrect Answer: Cloud providers aggregate the resources of many physical systems into massive pools that their users can draw from as needed. Instead of renting a hard drive or a whole physical server, they can just rent the amount of space they need, or rent a VM supported by a specific amount of RAM and CPU cores. Incorrect Answer: The other features are incorrect. Cloud providers could program their services to do any of these, however they are not the shared resources commonly provided on demand.DomainVirtualization and Cloud Computing
Question 48:
Which of the following describes WLAN best?
Wi-Fi, Bluetooth, infared, and cellular
DSL, infared, WiFi, Bluetooth
Wi-Fi, infared, Bluetooth, T-1
Bluetooth, Ethernet, WiFi, cellular
Correct answerWi-Fi, Bluetooth, infared, and cellularDSL, infared, WiFi, BluetoothWi-Fi, infared, Bluetooth, T-1Bluetooth, Ethernet, WiFi, cellularOverall explanationCorrect Answer: WiFi, Bluetooth, infrared, and cellular are all wireless. Incorrect Answers: Ethernet, DSL, and T-1 are all wired connections.DomainNetworking
Question 49:
Paul has just finished landing a major order. He needs to get this order to the main office over a thousand miles away. This order is massive and contains a tremendous amount of highly sensitive data. What’s the best way for him to send this data?
E-mail attachment
USB drive
VPN
Public cloud storage
E-mail attachmentUSB driveCorrect answerVPNPublic cloud storageOverall explanationCorrect: VPN. A Virtual Private Network can use the Internet to send the data with good security, and at a relatively fast speed. Incorrect answers: A USBdrive would have to be sent by courier or mail and would not be secure.E-mail attachments do not generally have good security.Public cloud storage would be fast and it would allow for fast transfer, however it is not a secure option.DomainMobile Devices
Question 50:
Garol has been asked to work with one of her company’s developers to set up an in-house test server that, as closely as possible, mirrors the environment the app is deployed in. When she asks the developer what kind of database the app uses and what sort of server hosts it, he says it doesn’t quite work like that. He describes how the app’s host automatically manages the database for them, leaving the developers free to focus on the app itself. What kind of cloud service model is the developer most likely describing?
Software as a service
Database as a service
Platform as a service
Infrastructure as a service
Software as a serviceDatabase as a serviceCorrect answerPlatform as a serviceInfrastructure as a serviceOverall explanationCorrect Answer: Platform as a service (PaaS) providers help small numbers of developers focus on building cloud applications by greatly simplifying the work it takes to set up and maintain key components like the server and database. Incorrect Answers: If you zoom in on just the database, a database as a service (DaaS) provider does provide a similar experience–but it won’t include hosting the whole application. While they could host this app with an infrastructure as a service (IaaS) provider, they would still need to be fairly involved in choosing, configuring, and maintaining the server and database. Software as a service is not a platform for hosting your own app or database.DomainVirtualization and Cloud Computing
Question 51:
Jose is upgrading the memory on his laptop. The laptop has two slots for RAM, but one of them is currently being occupied. He has checked the qualified vendor list to ensure compatibility. After installing the new stick of RAM, the BIOS reports the original amount of memory. What should Jose do NEXT?
Check your Virtual Memory settings
Check for any patches of Microsoft’s website
Replace all of the RAM
Reseat the new stick of RAM
Check your Virtual Memory settingsCheck for any patches of Microsoft’s websiteReplace all of the RAMCorrect answerReseat the new stick of RAMOverall explanationCorrect Answers: Reseat the RAM. In a situation like this, when you know the RAM is compatible, the first thing you should do is simply try again. Maybe it wasn’t inserted all the way. Incorrect Answers: Replacing all the RAM is incorrect. The RAMis compatible and it would not be likely they are both bad.Checking Windows Update is incorrect. Windows update would like likely work for a hardware issue. Virtual memory settings is incorrect. It does not affect the RAM which is hardware, it is an operating system concern.DomainMobile Devices
Question 52:
A user is complaining that nothing happens when he tries to print to a shared printer, even though the printer is powered on. What is most likely the cause of the problem?
The ISP service is currently not available
The user’s print drivers are corrupted
The printer is low on toner
The print server does not have network connectivity
The ISP service is currently not availableThe user’s print drivers are corruptedThe printer is low on tonerCorrect answerThe print server does not have network connectivityOverall explanationCorrect Answer: The answer to many network printer problems is “the printer has no network connection.” Do yourself a favor and check that first. Incorrect Answers: You’re not sharing a printer over the Internet, so your ISP has nothing to do with it. Network issues are far more common than driver issues. Driver issues can be disruptive, however they usually resolve in print jobs that print but with incorrect characters.If the printer was simply low on toner, it would at least try to print or give an error message.DomainHardware and Network Troubleshooting
Question 53:
You run the IPCONFIG command and your computer says you have the IP address 191.168.1.100. What class is your IP address in?
Class D
Class C
Class B
Class A
Class DClass CCorrect answerClass BClass AOverall explanationCorrect Answer: The first octect of a class B address will be 128-191 Incorrect Answers: Class A would be between 1-126 Class C would be between 192-223 Class D would be between 224-239DomainNetworking
Question 54:
Jim wants to be able to access his favorite website wirelessly with his new laptop, from anywhere. Which of the following would be the BEST choice for him to install/configure?
Infared card
Bluetooth card
Cellular card
802.11g wireless card
Infared cardBluetooth cardCorrect answerCellular card802.11g wireless cardOverall explanationCorrect Answer: A cellular card would allow Jim to be in any location he would like and not have to worry about wires. Unless there’s no cellular signal. Sorry, Montana! Incorrect Answers: Bluetooth and Infared are known for their ability to connect devices wirelessly in short ranges, but not for internet connections. An 802.11g wireless card would be great, however, Jim wants to be able to go anywhere. That includes the middle of the park if he wants.DomainNetworking
Question 55:
A user recently installed an external hard drive in their PC. After installation, they call you because now their existing DVD-RW and the new drive aren’t working. What should you tell them they need to replace?
Power supply
External hard drive
DVD-RW
SATA controller
Correct answerPower supplyExternal hard driveDVD-RWSATA controllerOverall explanationCorrect Answer: Time to upgrade that power supply unit. Looks like the addition of a drive just tilted the scale and now your PSU can’t power all your devices. Incorrect Answers: The fact that BOTH your DVD-RW and the external hard drive simultaneously failed is the big clue here. The DVD-RW was probably working just fine before you put the new drive in. And the external hard drive was brand new. The odds of having to replace that are very unlikely. Replacing the SATA controller wouldn’t be the fix here. Most SATA controllers are soldered onto motherboards. DomainHardware and Network Troubleshooting
Question 56:
You have an iOS device that you just recently purchased. Select two ways that you can synchronize your device with your computer. (Select two.)
IEEE-1394
IEEE-1284
Wi-Fi
USB
RS-232
IEEE-1394IEEE-1284Correct selectionWi-FiCorrect selectionUSBRS-232Overall explanationCorrect Answers: USB and Wi-Fi are the only methods to connect your iOS phone, music player, or tablet to your PC. Incorrect Answers: Apple does not facilitate syncing using the serial port (RS-232).Apple does not facilitate syncing using parallel port (IEEE-1284)Apple does not facilitate syncing using firewire (IEEE-1394).DomainMobile Devices
Question 57:
HTTPS differs from HTTP in that the traffic is ______ and it uses port number ____ .
Compressed, 110
Encrypted, 443
Password protected, 80
Throttled, 143
Compressed, 110Correct answerEncrypted, 443Password protected, 80Throttled, 143Overall explanationCorrect: HTTPS differs from HTTP in that the traffic is encrypted. It uses port number 443. Incorrect: HTTPS does not compress as part of the protocol, but, like HTTP, it supports compressed data such as images. Port 110 is for POP3 e-mail servers. Throttling is the process of reducing bandwidth for certain systems or networks. This is usually done by ISPs to prevent abuse of their bandwidth. Port 143 is for IMAP e-mail servers. A password is commonly used for an HTTPS site’s authentication, but port 80 is for HTTP, not HTTPS.DomainNetworking
Question 58:
If a technician has just replaced a laptop’s motherboard due to video issues, what should he do first if the speakers stop working?
Verify that the speakers are compatible with the replacement motherboard
Replace the speakers
Update the video drivers
Check the speakers’ connection to the motherboard
Verify that the speakers are compatible with the replacement motherboardReplace the speakersUpdate the video driversCorrect answerCheck the speakers’ connection to the motherboardOverall explanationCorrect Answer: It’s very likely that the speakers simply didn’t get hooked up correctly. Incorrect Answers: Video drivers probably won’t have much to do with sound issues. Don’t replace the speakers before making sure that they’re hooked up properly. Due to the way laptop hardware works, the replacement motherboard is probably the exact same as the old motherboard.DomainHardware and Network Troubleshooting
Question 59:
The term Fully Qualified Domain Name (FQDN) is associated with which of the following?
POST
NAT
DNS
DHCP
POSTNATCorrect answerDNSDHCPOverall explanationCorrect: DNS uses the FQDN to resolve a name to an IP address. Incorrect: A DHCP server provides IP addresses and other TCP/IP settings for DHCP clients. NAT enables multiple computers behind a router to use a single IP address. The POST is the first routine that runs when you power on the computer.DomainNetworking
Question 60:
Jim, a user, states that his inkjet printer is not printing as clearly as when he first purchased it. What should you do first to rectify this issue?
Calibrate the printer
Replace the USB cable
Use a different type of paper
Replace the ink cartridges
Correct answerCalibrate the printerReplace the USB cableUse a different type of paperReplace the ink cartridgesOverall explanationCorrect Answer: Looks like the ink may have dry up a little and you need to run the maintenance tool. Often times calibrating the printer will include running a printer head cleaning utility. Incorrect Answers: It may come to replacing the ink cartridges, but don’t get too eager. Those bad boys are expensive, after all! Try doing that last if possible. Using a different type of paper might help if you are using a some strange type of paper. Unfortunately, in this scenario, we don’t have any idea what kind of paper Jim is using. Initially, assume he is using the right kind. Replacing the USB cable would be a good idea if we were having connectivity issues with the printer itself. This, however, is a performance issue with the printer. DomainHardware and Network Troubleshooting
Question 61:
You have just turned on your PC. POST runs through all its tests and you receive a message on the screen saying that a SMART error has occurred. What item should be checked FIRST?
Motherboard
Video card
Hard Drive
Power Supply
MotherboardVideo cardCorrect answerHard DrivePower SupplyOverall explanationCorrect Answer: SMART is Self-Monitoring, Analysis, and Reporting Technology. It is used to tell whether or not your hard drive is going bad or not. Incorrect Answers: SMART is not designed for Power Supply Unit’s (PSU’s), Motherboards, or Video cards. Hard drives only.DomainHardware and Network Troubleshooting
Question 62:
You turn on your computer and you get a “Date and Time Not Set” message on the screen immediately after the manufacturer’s logo. What is the most likely cause of this message?
The system BIOS is corrupted
The computer was incorrectly shut down
The OS has stopped sync’ing with the time server
The CR-2032 battery needs to be replaced
The system BIOS is corruptedThe computer was incorrectly shut downThe OS has stopped sync’ing with the time serverCorrect answerThe CR-2032 battery needs to be replacedOverall explanationCorrect Answer: The technical name for a CMOS battery is a CR-2032. You can pick them up cheaply at your local electronics store. When you see the message, “Date and Time Not Set,” it usually always points to the CMOS forgetting what time it is because its battery has run out of juice. Get a new one and you’ll be good to go! Incorrect Answers: If you incorrectly shut down your computer, you’d get a message stating something about how Windows experienced an improper shutdown and now needs to do some CHKDSK scans to make sure your files are intact. While it may be possible that your operating system isn’t syncing up with the time server, we haven’t even gotten to a place to view the operating system. As they system cannot pass this bootup error message, the BIOS is most likely not corrupted. This is an error message due to a failure in the CMOS battery.DomainHardware and Network Troubleshooting
Question 63:
What does the “chassis intrusion detection” BIOS option do?
It triggers an alarm.
It logs that the chassis (case) has been opened.
It sends an e-mail to the system administrator.
It triggers a system shutdown and locks the drives.
It triggers an alarm.Correct answerIt logs that the chassis (case) has been opened.It sends an e-mail to the system administrator.It triggers a system shutdown and locks the drives.Overall explanationCorrect: It logs that the chassis (case) has been opened. Incorrect: The other answers are not anything the BIOS is capable of doing on a system.DomainHardware
Question 64:
What do you plug into a three-row, 15-pin port?
Keyboard
Mouse
VGA Monitor
Joystick
KeyboardMouseCorrect answerVGA MonitorJoystickOverall explanationCorrect: You plug a monitor into a three-row, 15-pin port. Incorrect: A joystick uses a two-row, 15-pin port. Keyboards and mice use round, mini-DIN connectors or USB.DomainHardware
Question 65:
You are troubleshooting a user’s computer with a recently-upgraded video card which now just reboots at random times. You ask the user to keep track of when they notice the reboots happening. After a day, the user reports that it happens when they start up a game or when they start streaming HD video. What is causing these random restarts?
The video card needs a more powerful power supply
The game and video streaming applications are incompatible with the video card
They have a corrupt graphics card driver
The graphics card they upgraded to is not on the HCL
Correct answerThe video card needs a more powerful power supplyThe game and video streaming applications are incompatible with the video cardThey have a corrupt graphics card driverThe graphics card they upgraded to is not on the HCLOverall explanationCorrect Answer: The video card needs a more powerful power supply. It sounds like only when the user is pushing their computer with complex graphics processing that it is running out of power and simply quitting. Upgrading the PSU would most likely resolve this issue and give the graphics card all the energy it needs. Incorrect Answers: The graphics card not showing up on the Hardware Compatbility List (HCL) couldn’t be it because it seems like they only have the problem when they are running “intense” applications. At all other times, the video card is doing fine. A corrupt graphics driver would most likely make the image on the screen disfigured, blurry, discolored, wavy lines, etc. If you have video card drivers installed, then your system should be able to play a streaming video or play a game without having to worry about compatibility issues. Depending on the graphics card you purchased, your performance can be greatly affected in video playback and gaming.DomainHardware and Network Troubleshooting
Question 66:
The accelerometer in a mobile device makes which of the following possible? (Select two.)
Protection of the device when it’s dropped
Downloads go faster
Game controller input
Automatic rotation of the screen when it’s flipped
High speed communication from other devices
Protection of the device when it’s droppedDownloads go fasterCorrect selectionGame controller inputCorrect selectionAutomatic rotation of the screen when it’s flippedHigh speed communication from other devicesOverall explanationCorrect Answers: The accelerometer enables software (like games) to use the orientation of the device as input, like a steering wheel or game controller. It is also what tells the device that the user has rotated the orientation from portrait to landscape, causing the device to rotate the screen correctly. Incorrect Answers: The accelerometer has nothing to do with downloads or communication with other devices. Many hard drives may contain an accelerometer that will protect it in the event of being dropped, but the mobile devices discussed have no hard drives.DomainMobile Devices
Question 67:
While any form of electronic communication suffers from some amount of latency, which of the following technologies is particularly notorious for this problem?
POTS
SDSL
1000BaseT
Satellite
POTSSDSL1000BaseTCorrect answerSatelliteOverall explanationCorrect: Satellite. Geo-stationary satellites orbit at 22000 miles above the earth. The physical distance makes latency an inherent issue for satellite communication. Incorrect: Neither 1000BaseT, SDSL, or POTS have as much latency as satellite.DomainNetworking
Question 68:
Which of the following are not technically necessary to run a virtual machine? (Select two.)
A multicore CPU
A PCIe virtual machine manager
A CPU with virtualization support
A hypervisor
Correct selectionA multicore CPUCorrect selectionA PCIe virtual machine managerA CPU with virtualization supportA hypervisorOverall explanationCorrect Answer: While a multicore CPU will definitely help with the multitasking associated with running VMs (and multicore CPUs are now the norm), it isn’t a hard requirement. A virtual machine manager does help you manage running VMs, but the VMM is software–not a PCIe card. Incorrect Answer: While CPU support for virtualization is now ubiquitous, it is still technically a requirement (most likely to be a problem if the CPU feature is inadvertently disabled in the system setup utility).DomainVirtualization and Cloud Computing
Question 69:
Which of the following devices is probably the safest and easiest to hot-swap on a PC?
A mini-PCI NIC
A USB camera
A PS/2 Mouse
A modular CD-ROM drive
A USB hard drive
A mini-PCI NICCorrect answerA USB cameraA PS/2 MouseA modular CD-ROM driveA USB hard driveOverall explanationCorrect Answer: Nothing, not even a modular drive, beats USB for hot-swap ease and safety. Incorrect Answers: Either USB device might be easily swapped, but you could lose data on a USB hard drive if you didn’t close any open files first. A mini-PCI NIC would not be hot-swappable, nor would a PS/2 mouse.DomainMobile Devices
Question 70:
How many pins does a DDR2 DIMM have?
240
168
184
200
Correct answer240168184200Overall explanationCorrect: A DDR2 DIMM has 240 pins. Incorrect: DDR2 SO-DIMMs have 200 pinsDDR DIMMs have 184 pinsSDR DIMMS use 168 pins.DomainHardware
Question 71:
Which of the following best represent valid IPv6 addresses? (Select two)
2001:4860:4002:0802
2001::eca5:2048:g34a
2620:0000:1c18:0000:face:b00c:0000:0003
10.12.14.100
fe80:02a0::0260:8ce9
70-F1-A1-91-EB-E4
2001:4860:4002:08022001::eca5:2048:g34aCorrect selection2620:0000:1c18:0000:face:b00c:0000:000310.12.14.100Correct selectionfe80:02a0::0260:8ce970-F1-A1-91-EB-E4Overall explanationCorrect Answer: IPv6 is a 128-bit addressing scheme written in hexadecimal format. When you see an IPv6 address, it will be eight quartets seperated by colons. Strings of zeros can be written by the shortcut “::” Incorrect Answers: 10.12.14.100 is a class A private IPv4 address. 70-F1-A1-91-EB-E4 is a great example of a MAC address. 2001:4860:4002:0802 is half of an IPv6 address. It’s missing the second half, otherwise known as an EUI-64. 2001::eca5:2048:g34a has “g” in the sequence. 0-9 and a-f are the only valid characters in an IPv6 address. But we’ll talk about that more in Network+!DomainNetworking
Question 72:
A technician troubleshoots a broken PC only to find that a strong burning odor is coming from inside the case. Which of the following parts most likely experienced a level of electrical burn?
PSU
Hard drive
CMOS battery
Processor
Correct answerPSUHard driveCMOS batteryProcessorOverall explanationCorrect Answer: The power supply unit (PSU) is the most likely thing to experience electrical burn. Incorrect Answers: Although other components could experience electrical burn, the question asked for the most likely to experience electrical burn. The power supply regulates the incoming power.DomainHardware and Network Troubleshooting
Question 73:
You are troubleshooting a laptop that was just recently diagnosed with trouble holding power. When you turn the laptop on to troubleshoot, you notice that even while connected to the AC power adapter, the laptop will still use battery power. What could be causing something like this to happen? (Choose two.)
The internal power circuity on the motherboard is faulty
The power adapter that plugs into the wall is malfunctioning
The battery is incompatible with the laptop
The LCD’s power inverter is malfunctioning
You have selected a power scheme in your OS that disables charging
Correct selectionThe internal power circuity on the motherboard is faultyCorrect selectionThe power adapter that plugs into the wall is malfunctioningThe battery is incompatible with the laptopThe LCD’s power inverter is malfunctioningYou have selected a power scheme in your OS that disables chargingOverall explanationCorrect Answers: The internal power circuity and the power adapter are the two pieces to this mystery that need to be checked out. Either one could be at fault, or worse… both! Incorrect Answers: If the LCD’s power inverter was malfunctioning, we would have a working laptop, we just wouldn’t see anything on the laptop’s screen. There is no power scheme in your OS that will disable battery charging. The battery being incompatible with system is unlikely. Laptops always come with a battery when purchased. Batteries are also very proprietary to the unit.DomainHardware and Network Troubleshooting
Question 74:
Dave has a newly installed locally connected printer. When he tries to print a test page, he gets no error, but the printer fails to print. Which of the following would he want to check first?
Print Spooler Service
Task Scheduler
DHCP Service
Network connection
Correct answerPrint Spooler ServiceTask SchedulerDHCP ServiceNetwork connectionOverall explanationCorrect: He would want to check the Print Spooler Service first. Incorrect: This is a locally connected printer, so both DHCP service and Network connection are network features. DHCPand Network connections are not applicable to locally connected printers.Task scheduler is incorrect. Task scheduler is in a Windows app that performs routine tasks.DomainHardware
Question 75:
You are replacing your old 802.11b wireless router with a new 802.11g wireless router. You have just changed the SSID, you enabled WPA2, and finally, you set a passphrase for the level of encryption chosen. What should you do NEXT?
Enable AES on the router
Configure WEP
Change the administrator password
Update your firmware
Enable AES on the routerConfigure WEPCorrect answerChange the administrator passwordUpdate your firmwareOverall explanationCorrect Answer: Change the administrator password to access the wireless router’s web interface. Incorrect Answers: AES is enabled already whey you set up WPA2. WEP is not a correct answer. It is not as good as the already enabled WPA2. Updating your firmware is only necessary when you want new features or the firmware update fixes a particular issue with your device.DomainNetworking
Question 76:
You are working on a laptop with an LCD screen that has dead pixels. What is the best way to get rid of them?
Replace the inverter
Replace the LCD panel
Replace the back bezel
Replace the backlight
Replace the inverterCorrect answerReplace the LCD panelReplace the back bezelReplace the backlightOverall explanationCorrect Answer: The pixels are defective and the LCD is failing to reproduce light levels correctly. The only way to fix this is to replace the LCD panel itself. Incorrect Answers: You should replace the inverter when you see nothing but a faint image on a dark screen. Replace the backlight(s) when the LCD screen starts to go dim or eventually just goes black. Replacing the back bezel might make your laptop look brand new again, but it won’t fix a dead pixel.DomainHardware and Network Troubleshooting
Question 77:
What is the correct boot sequence for a PC?
POST, power good, CPU, boot loader, operating system
Power good, CPU, POST, boot loader, operating system
Power good, boot loader, CPU, POST, operating system
CPU, POST, power good, boot loader, operating system
POST, power good, CPU, boot loader, operating systemCorrect answerPower good, CPU, POST, boot loader, operating systemPower good, boot loader, CPU, POST, operating systemCPU, POST, power good, boot loader, operating systemOverall explanationCorrect: The correct boot sequence: Power good, CPU, POST, boot loader, operating system. Incorrect: All three other options are not the correct boot sequence.DomainHardware
Question 78:
Taryn needs to make a list of what her company will need to set up an on-premises VDI system to pilot desktop virtualization for all 21 Windows users in the accounting department. Which of the following is least likely to be on her list?
3 new full-height equipment racks and 21 rails for mounting the users’ existing desktop PCs in the new racks.
A SAN server with along with SSDs for it to manage.
One or two large servers that will go in an existing rack.
A number of new Windows licenses
Correct answer3 new full-height equipment racks and 21 rails for mounting the users’ existing desktop PCs in the new racks.A SAN server with along with SSDs for it to manage.One or two large servers that will go in an existing rack.A number of new Windows licensesOverall explanationCorrect Answer: Taryn’s company certainly could set up desktop virtualization in a way that involves taking the user’s existing desktops, sticking them in new racks, and making the users access them via remote desktop. Virtual desktop infrastructure (VDI), however, describes an arrangement where user desktops are automatically-managed VMs running on a central server–not desktop systems mounted in a rack. Incorrect Answer: All other answers are incorrect. To implement traditional VDI for 27 Windows users, Taryn will likely need some hefty servers and new Windows licenses. A SAN server, while not essential, would still be a great way to manage the storage needed for the virtual desktops.DomainVirtualization and Cloud Computing
Question 79:
What does registration do for color laser printers?
Realigns each color to make a focused image
Sends your purchase information to the manufacturer
Increases the color depth
Formats the printer’s memory storage to support each color.
Correct answerRealigns each color to make a focused imageSends your purchase information to the manufacturerIncreases the color depthFormats the printer’s memory storage to support each color.Overall explanationCorrect: Registration realigns the individual colors to create a sharper focus of the printed image. Incorrect: Increases the color depths is incorrect. Saturation would increase the color depth. Sends your purchase information is incorrect. Registration generally applies to software, though it could apply to hardware. Formatting a printer’s memory is not a valid choice.DomainHardware
Question 80:
You just upgraded the RAM on your older PC at home. When you boot up the computer, it doesn’t recognize the new memory even though it was on the Qualified Vendor’s List (QVL) on the manufacturer’s website. What are you going to need to do to solve this problem?
Change the jumpers on your motherboard to allow for the RAM upgrade
Replace your CR-2032 battery
Flash your BIOS
Go to Windows Update and search for any latest patches
Change the jumpers on your motherboard to allow for the RAM upgradeReplace your CR-2032 batteryCorrect answerFlash your BIOSGo to Windows Update and search for any latest patchesOverall explanationCorrect Answer: Time for a BIOS flash. The website said it is compatible, but if technology has changed, your BIOS version on your motherboard may be dated. The site will often also show the BIOS version required for the hardware. Incorrect Answers: This isn’t a Microsoft problem yet, so visiting the Windows Update site won’t do much good. Changing jumpers on a motherboard is an old technology. The only only jumpers relevant in modern motherboards are for clearing CMOS settings. A bad CR-2032 battery, or CMOS battery, will only cause a system to lose settings.DomainHardware and Network Troubleshooting
Question 81:
Hubs, by definition, broadcast every packet they receive out to all of their connected ports, causing occasional data collisions. Which device eliminates data collisions by not broadcasting to every port?
NetBEUI
Switch
Router
STP
NetBEUICorrect answerSwitchRouterSTPOverall explanationCorrect: A switch eliminates data collisions by directly connecting traffic between two devices. Incorrect: Routers forward traffic based on IP address and are used to separate networks. They have nothing to do with collisions. NetBEUI is a legacy protocol used in the Microsoft world for file sharing. It is extremely fast, but is not routable. Shielded Twisted Pair (STP) is used to connect networked devices such as computers, hubs, switches, and routers where there is a large amount of electro magnetic interference (EMI).DomainNetworking
Question 82:
In which of the following situations is a registration procedure often required on a color printer?
After moving the printer
Every 30 days
At every reset
Registration is only done once after initial purchase.
Correct answerAfter moving the printerEvery 30 daysAt every resetRegistration is only done once after initial purchase.Overall explanationCorrect: After moving a printer, it is common for it to lose registration, requiring a registration procedure to keep the image sharp. Incorrect: There is no common procedure to register a printer at set time intervals or at reset. Registration is done on an as-needed basis, not just once at the factory.DomainHardware
Question 83:
Which of the following cloud characteristics gives cloud customers the incentive to release resources they aren’t actively using?
Shared resources
Rapid elasticity
High availability
Metered utilization
File synchronization
Shared resourcesRapid elasticityHigh availabilityCorrect answerMetered utilizationFile synchronizationOverall explanationCorrect Answer: Metered utilization, which bills users based on how much of a resource they consume, gives them an incentive to release resources when they aren’t needed. Incorrect Answer: As cloud characteristics, shared resources, rapid elasticity, high availability, and file synchronization provide no specific incentive to release an unused resource.DomainVirtualization and Cloud Computing
Question 84:
Which of the following is a proper name for a stick of RAM?
DIMM
LGA
VGA
CRIMM
Correct answerDIMMLGAVGACRIMMOverall explanationCorrect: Modern computers use DIMMs for RAM. Incorrect: CRIMMs were used to fill empty slots when using RDRAM. LGA stands for Land Grid Array and is a type of CPU package. BGA stands for Ball Grid Array and is a type of CPU package.DomainHardware
Question 85:
You are troubleshooting a desktop computer. You have just removed every component, except for the bare essentials, but the computer still won’t boot up. When you turn on the computer, all you receive from the system is a repetitive series of beeps. Which of the following is MOST likely the problem?
The keyboard
The CPU
The memory
The video card
The keyboardThe CPUCorrect answerThe memoryThe video cardOverall explanationCorrect Answer: The ongoing series of beeps is the wonderful sound of bad RAM. Swap the RAM out and get some that is working and compatible with your system. Incorrect Answers: The keyboard being bad or disconnected will usually show a prompt on your screen. The video card being bad or disconnected will usually be 1 long beep followed by 2 short ones. The CPU being missing or bad will prevent your computer from booting and beeping.DomainHardware and Network Troubleshooting
Question 86:
When walking past a server with a RAID 5 array, a technician hears a loud clicking noise. Which of the following could most likely occur?
OS not found on boot
BSOD
RAID array failure
Hard drive failure
OS not found on bootBSODRAID array failureCorrect answerHard drive failureOverall explanationCorrect Answer: A clicking disk based hard drive means a dying hard drive. Get that hard drive out of the raid and replaced as quick as possible. Incorrect Answers: None of the other answers cause clicking. The are all software based issues that will normally cause error messages or a system to no boot.DomainHardware and Network Troubleshooting
Question 87:
A user has just dropped off his laptop reporting that the screen is very dim and it’s difficult to make out the icons on the desktop. When you plug in an external monitor to the system, it brings up the desktop perfectly. Which of the following needs to be replaced?
The LCD inverter
The external monitor
The VGA card
The LCD panel
Correct answerThe LCD inverterThe external monitorThe VGA cardThe LCD panelOverall explanationCorrect Answer: The LCD inverter is likely not supplying voltage to the backlights (CCFLs) and will need to be replaced. Incorrect Answers: The external monitor was there to help us diagnose this malfunctioning laptop. And it did its job perfectly. While the LCD panel may seem like a good answer, it’s probably not the BEST answer. We can still see the icons—they are just very dim and hard to make out. It’s more likely a problem with the backlights or the inverters that power the backlights. The VGA card is working just fine, if it wasn’t, we would have had nothing on the external monitor we connected.DomainHardware and Network Troubleshooting
Question 88:
Which end of the USB cable plugs into the PC?
A
Mini-A
B
Mini-B
Correct answerAMini-ABMini-BOverall explanationCorrect: Plug the A connector into the PC. Incorrect: The B connector and mini-B connectors are used on the peripherals themselves. Mini-A is not a valid connection type.DomainHardware
Question 89:
Jim wants to create a secure connection with a remote host. Which of the following would you recommend that he use?
Telnet
FTP
SSH
HTTP
TelnetFTPCorrect answerSSHHTTPOverall explanationCorrect Answer: SSH is known as Secure Shell. If you want a secure connection between two hosts, this should be your go-to service. Incorrect Answers: Telnet, FTP, and HTTP are all excellent ways to connect to remote hosts, but they are completely insecure.DomainNetworking
Question 90:
Both CD and DVD drive speeds are based on multiples of the original CD-ROM drive speed. What is that speed?
150 MBps
100 MBps
150 KBps
100 KBps
150 MBps100 MBpsCorrect answer150 KBps100 KBpsOverall explanationCorrect: The original CD-ROM drive speed was 150 KBps. Incorrect: 100 MBps was the maximum data transfer rate of ATA-6. 150 MBps is the maximum throughput of the 1.5Gb variety of SATA drives. 100 KBps is meaningless and made up.DomainHardware
Question 1:
What component can you not typically upgrade on a laptop?
RAM
Wireless card
Video card
Hard drive
RAMWireless cardCorrect answerVideo cardHard driveOverall explanationCorrect Answer: It’s not possible to upgrade video cards in most laptops. Incorrect Answers: You can upgrade hard drives, RAM, or wireless cards in most laptops.DomainMobile Devices
Question 2:
Ronnie’s on a call to a customer who’s complaining that his Blu-ray Disc-equipped home theater PC “isn’t working right.” Talking to the customer, Ronnie discovers that the Blu-ray Disc image isn’t in high definition, but instead looks like a standard TV signal. He notices the connection between the computer and monitor is an old component connection. He thinks to himself: “That Blu-ray Disc device requires an HDMI cable for high-resolution.” Based on the CompTIA troubleshooting theory, what should he do next?
Establish a theory of probable cause
Verify full system functionality
Document findings
Test the theory
Establish a theory of probable causeVerify full system functionalityDocument findingsCorrect answerTest the theoryOverall explanationCorrect Answer: Based on CompTIA’s troubleshooting theory, he should test the theory next. Incorrect: The technician had followed the first two steps in the troubleshooting theory: identify the problem and establish a theory of probable cause. The third step in the process is to test the theory. The next three steps in order: 4. Establish a plan of action to resolve the problem 5. Verify full system functionality 6. Document findingsDomainHardware and Network Troubleshooting
Question 3:
John’s laptop won’t recharge and he suspects the AC adapter is the problem. Which tool should he use to test it?
Paper clip
Induction toner
Power supply tester
Multimeter
Paper clipInduction tonerPower supply testerCorrect answerMultimeterOverall explanationCorrect: Use a multimeter to test the AC adapter’s output voltage. Incorrect: An induction toner enables you to locate specific network cables, often inside a wiring closet. A power supply tester enables you to test a power supply when it’s not plugged into a computer—a handy device, but not for testing an AC adapter. While you might be successful testing with a paper clip, it’s probably not a good idea!DomainHardware and Network Troubleshooting
Question 4:
Mike is setting up a new Internet connection. When he types PING 209.29.33.25, he is successful. When he types www.totalsem.com, he is not. Which TCP/IP setting should he check first?
Default Gateway
WINS
Subnet Mask
DNS
Default GatewayWINSSubnet MaskCorrect answerDNSOverall explanationCorrect Answer: He should check his DNS (Domain Name System) server address first. Incorrect Answers: The subnet mask isn’t the problem if he is able to PING a server on the Internet. WINS is like DNS, but for working with NetBIOS names, not domain names like www.totalsem.com. The Default Gateway is working if he is able to PING a server on the Internet.DomainNetworking
Question 5:
A company uses a proxy server for FTP and HTTP traffic. What port number needs to be set on the client’s FTP applications to enable users to use FTP?
110
21
25
80
110Correct answer212580Overall explanationCorrect: 21, FTP uses ports 20 and 21. However, port 20 isn’t listed, so go with port 21. Incorrect: HTTP (the Web) uses port 80. SMTP (outgoing mail) uses port 25POP3 (incoming mail) uses port 110DomainNetworking
Question 6:
If a device is hot-swappable, why should you use the Safely Remove Hardware Tool?
It prevents ESD.
It enables any open files on the device to be closed.
It enables the device to recover from a power management mode if the device should be in one.
It allows Windows to store information about the device.
It enables the device to cool down.
It prevents ESD.Correct answerIt enables any open files on the device to be closed.It enables the device to recover from a power management mode if the device should be in one.It allows Windows to store information about the device.It enables the device to cool down.Overall explanationCorrect Answer: Safely Remove Hardware enables open files on the removable device to close. Incorrect Answers: It enables the device to cool down is incorrect.It enables the device to recover from a power management mode if the device should be in one is incorrect.It prevents ESD is incorrect. ESD is prevented by using anti static mats and wrist guards. DomainHardware
Question 7:
A user comes to work and turns on their computer. During startup they receive a “SMART error.” Which of the following devices will cause this message to appear?
Hard Drive
CD-ROM
Power Supply
Video Card
Correct answerHard DriveCD-ROMPower SupplyVideo CardOverall explanationCorrect Answer: SMART is a BIOS based check for your hard drive. If it detects errors in one of its hard drive tests, your system will show a SMART error. Incorrect Answers: SMART is an interface between BIOS and the hard drive. It does not work with any other hardware.DomainHardware and Network Troubleshooting
Question 8:
Which type of flash memory card is the oldest?
CompactFlash
Secure Digital
Memory Stick
SmartMedia
Correct answerCompactFlashSecure DigitalMemory StickSmartMediaOverall explanationCorrect: CompactFlash is the oldest type of flash memory card. Incorrect: Memory Stick is Sony’s proprietary memory format. Secure Digital cards are the most common type of flash memory cards used today. SmartMedia came out as a competitor to CompactFlash, but is no longer used in newer devices.DomainHardware
Question 9:
Tommy sent a print job to his printer, but then he realized the printer was out of paper. He adds paper, but the print job does not automatically print. He opens the Print queue and sees his print job shows an error. He right-clicks on the print job and a menu appears. What does he need to select in this menu to get the print job on its way to the printer?
Start
Restart
Pause
Open
StartCorrect answerRestartPauseOpenOverall explanationCorrect: You would press the Restart option. Incorrect: Neither Open nor Start are valid options for a print job menu. Pause is a valid option, but it simply pauses a print job. It does not restart a print job.DomainHardware and Network Troubleshooting
Question 10:
There are only two issues that take place on a modern PC that generate beep codes. What are they? (Select two.)
No video card detected
Problem with CPU
Bad or Missing RAM
BIOS needs updating
Correct selectionNo video card detectedProblem with CPUCorrect selectionBad or Missing RAMBIOS needs updatingOverall explanationCorrect: The only two common POST beep codes are: No video card detected and Bad or Missing RAM. Incorrect: If the CPU is bad, then the POST can’t start. There is no error code for an outdated BIOS.DomainHardware and Network Troubleshooting
Question 11:
A user’s video card is starting to show random colors on the screen. Before replacing the card, which of the following troubleshooting steps should you do?
Nothing, just implement the solution
Establish a theory of probable cause
Identify the problem
Document your findings
Nothing, just implement the solutionCorrect answerEstablish a theory of probable causeIdentify the problemDocument your findingsOverall explanationCorrect Answer: Check to see what caused this random color phenomenon by establishing a theory. Incorrect Answers: You’ve already identified the problem… random colors.You don’t want to implement a solution yet, because you don’t know what caused it (is it a software or hardware issue?) Document your findings is incorrect, you have not found the issue. You’ll handle that part later in the troubleshooting process.DomainHardware and Network Troubleshooting
Question 12:
What is the best way to determine the total capacity and specific type of RAM your system can handle?
Open the case and inspect the RAM.
Check the motherboard book.
Check the System utility in the Control Panel.
Check the Device Manager.
Open the case and inspect the RAM.Correct answerCheck the motherboard book.Check the System utility in the Control Panel.Check the Device Manager.Overall explanationCorrect: The best way to determine the total capacity and specific type of RAM your system can handle is to check the motherboard book. Incorrect: The other answers won’t tell you the total capacity or specific type of RAM your system can handle.DomainHardware and Network Troubleshooting
Question 13:
What is the best way to toggle between a laptop’s screen and an external monitor?
Function keys on keyboard
Task Manager
Turn the monitors on and off
Display settings in Control Panel
Correct answerFunction keys on keyboardTask ManagerTurn the monitors on and offDisplay settings in Control PanelOverall explanationCorrect Answer: The function keys on the keyboard enable users to do things like change the brightness and contrast of the screen, change the speaker volume, and toggle to an external monitor. Incorrect Answers: Task Manager enables you to end unresponsive processes, start and stop services, and check your computer’s performance. The display settings won’t enable you to toggle a monitor on or off. Turning the monitor on and off won’t do anything if the PC isn’t outputing any video to it.DomainMobile Devices
Question 14:
What is the simplest way to change the brightness on a laptop’s monitor?
In the video display drivers
In the Device Manager of the operating system
In the BIOS
Fn key
In the video display driversIn the Device Manager of the operating systemIn the BIOSCorrect answerFn keyOverall explanationCorrect Answer: Almost every laptop has a function key for controlling brightness. Incorrect Answers: Neither Device Manager nor BIOS contain settings for screen brightness. You might be able to change brightness in the display drivers, but the question is looking for the simplest option available.DomainMobile Devices
Question 15:
What happens when you attempt to print to a phantom print device?
Nothing. The print job goes to the printer, but no output occurs.
Windows will display an “Invalid print device” error.
Windows will display an “Invalid print device” error and prompt for a valid print device.
Windows will display a “Print device not found” error.
Correct answerNothing. The print job goes to the printer, but no output occurs.Windows will display an “Invalid print device” error.Windows will display an “Invalid print device” error and prompt for a valid print device.Windows will display a “Print device not found” error.Overall explanationCorrect: When you print to a phantom or virtual print device, the software printer takes the print job and processes it. Then nothing else happens. Incorrect: As long as the printer software is valid, Windows will not report anything unusual or missing.DomainHardware and Network Troubleshooting
Question 16:
Thermal printers have a major disadvantage compared to other printer technologies: thermal printing __________ .
Is far too slow for most functions.
Is unsuitable for archival purposes.
Costs much more in terms of consumables.
Is limited to 16 colors.
Is far too slow for most functions.Correct answerIs unsuitable for archival purposes.Costs much more in terms of consumables.Is limited to 16 colors.Overall explanationCorrect Answer: Thermal paper is sensitive to heat, making it unsuitable for archival printing. Incorrect Answers: Thermal printing uses one color, not 16, nor is it too slow. Its cost is not its main disadvantage, either.DomainHardware
Question 17:
802.11g uses the _______ radio band and transmits at a maximum speed of ______ .
2.4GHz, 11Mb/sec
5GHz, 11Mb/sec
2.4GHz, 54Mb/sec
5GHz, 54Mb/sec
2.4GHz, 11Mb/sec5GHz, 11Mb/secCorrect answer2.4GHz, 54Mb/sec5GHz, 54Mb/secOverall explanationCorrect: 802.11g uses the 2.4GHz radio band and transmits at a maximum speed of 54Mb/sec. Incorrect: 2.4GHz, 11Mb/sec is 802.11b. 5GHz, 11Mb/sec is not associated with a standard.5 GHz, 54Mb/sec is 802.11a.DomainNetworking
Question 18:
Jim’s parents want to use a wireless keyboard for their Home Theater PC running Windows Media Center. Which technology would best meet their needs?
Bluetooth
Ethernet
802.11
Serial
Correct answerBluetoothEthernet802.11SerialOverall explanationCorrect Answer: Of the choices given, only Bluetooth is a viable option as there are no wireless keyboards that use the other wireless choice, 802.11. Incorrect Answers: Serial and Ethernet are not wireless technologies.DomainNetworking
Question 19:
Your primary hard drive starts to make a clicking noise. There are some very important files on the drive. How do you make sure the data can be saved?
Run anti-virus software on it.
Take it to a professional data recovery company.
Run Disk Defragmenter on it.
Run CHKDSK on it.
Run anti-virus software on it.Correct answerTake it to a professional data recovery company.Run Disk Defragmenter on it.Run CHKDSK on it.Overall explanationCorrect: The only people who have the equipment and knowledge to open hard drives for data retrieval are professional data recovery centers. Incorrect: CHKDSK will only scan for errors. Anti-virus software will only search for and attempt to stop viruses. Disk Defragmenter defragments drives.DomainHardware and Network Troubleshooting
Question 20:
Any network using hubs can be substantially improved simply by replacing the hubs with:
Bridges
CAT6
Routers
Switches
BridgesCAT6RoutersCorrect answerSwitchesOverall explanationCorrect: Switches work at layer 2 of the OSI networking model—a standard in network communication that you will learn more about in Network+. By existing at layer 2, switches remember communication between nodes based on MAC addresses, creating direct connections instead of a single shared connection for the entire network in the case of hubs. Incorrect: A bridge connects multiple network segments, but only has one incoming port and one outgoing port. A router is a different kind of networking device. Where switches connect computer together, routers connect networks together based on IP addresses rather than MAC addresses. CAT6 is Category 6 network cabling. This particular type of network cabling can go at speeds up to 10Gbps.DomainNetworking
Question 21:
Which of the following is a private IP address?
192.1.1.1
10.1.1.1
1.1.1.1
172.1.1.1
192.1.1.1Correct answer10.1.1.11.1.1.1172.1.1.1Overall explanationCorrect: 10.1.1.1 is a private IP address. There are three private IP address ranges: Class A: 10.X.X.X Class B: 172.16.X.X - 172.31.X.X Class C: 192.168.X.X Incorrect: The other three answers are not valid private IPaddresses.DomainNetworking
Question 22:
A retail-boxed CPU usually comes with a ________ fan.
Overdrive
Specialized
OEM
Large
OverdriveSpecializedCorrect answerOEMLargeOverall explanationCorrect Answer: The fans that come with retail-boxed CPUs are known as Original Equipment Manufacturer (OEM) fans. Incorrect Answers: The other answers are aftermarket fans that are designed when using the CPU beyond its normal intent. Manufacturers provide a fan that will support normal usage on a CPU.DomainHardware
Question 23:
What component is in charge of powering an LCD screen?
PCMCIA card
Backlight
Inverter
PCIe card
PCMCIA cardBacklightCorrect answerInverterPCIe cardOverall explanationCorrect Answer: The inverter provides power to an LCD screen. Incorrect Answers: PCMCIA cards are used as expansion slots on laptops. Backlights are also powered by the inverter. PCIe is a type of expansion slot, and has nothing to do with powering LCD screens.DomainMobile Devices
Question 24:
A technician arrives to troubleshoot a problem. Which of the following troubleshooting steps should the technician perform AFTER identifying the problem?
Establish a theory of probable cause.
Verify full functionality and implement preventative measures.
Document findings, actions, and outcomes.
Establish a plan of action and implement a solution.
Correct answerEstablish a theory of probable cause.Verify full functionality and implement preventative measures.Document findings, actions, and outcomes.Establish a plan of action and implement a solution.Overall explanationCorrect Answer: Figure out what caused the problem in the first place. Incorrect Answers: You can’t establish a plan of action without first identifying the problem. Documenting is the last thing in the troubleshooting process. Verifying functionality is to be done right before the documentation.DomainHardware and Network Troubleshooting
Question 25:
What device enables a laptop with a single video output port to support multiple monitors?
Docking station
Adjustable monitor arm
VGA to DVI converter
PCMCIA card
Correct answerDocking stationAdjustable monitor armVGA to DVI converterPCMCIA cardOverall explanationCorrect Answer: A docking station enables you to add additional ports and features that a laptop would otherwise not have. Incorrect Answers: A VGA to DVI converter just enables you to hook a DVI cable up to a VGA port. A monitor arm enables you to reposition your monitor. A PCMCIA card is a type of expansion card for a laptop.DomainMobile Devices
Question 26:
Which of the following best describes the difference between an on-site data center containing servers and other computing resources and a private cloud?
A private cloud is not on-site, but is created by joining public cloud resources to the local network with a virtual private network (VPN).
A simple on-site data center is not integrated with any cloud resources, while a private cloud is created by integrating data center and public cloud resources.
A private cloud is not on-site, but is created by joining public cloud resources into a virtual private cloud (VPC).
A private cloud enables internal users to provision and release computing resources from the on-site data center more or less the same way they would with public cloud resources.
A private cloud is not on-site, but is created by joining public cloud resources to the local network with a virtual private network (VPN).A simple on-site data center is not integrated with any cloud resources, while a private cloud is created by integrating data center and public cloud resources.A private cloud is not on-site, but is created by joining public cloud resources into a virtual private cloud (VPC).Correct answerA private cloud enables internal users to provision and release computing resources from the on-site data center more or less the same way they would with public cloud resources.Overall explanationCorrect Answer: Much like a public cloud, a private cloud’s secret sauce is the software layer that makes it easy for users to provision and release resources on demand. Incorrect Answer: A private cloud is often (but does not have to be) located on site. Creating a private cloud does not require integrating with any public cloud resources.DomainVirtualization and Cloud Computing
Question 27:
When you ask your friend Meda what she’s been up to at work lately, she says she’s in the middle of a big push to move an important company database from the cloud to an on-site data center. You ask why, and she says a new data regulation going into effect in three months forbids using shared resources to host certain kinds of data. What is she likely refering to?
Hosting services, including cloud platforms, typically use the same hardware to host services for multiple customers at the same time.
Resources hosted on public cloud platforms are accessible to anyone with an Internet connection.
Cloud platforms have less-granular access controls than local servers, so every application running in the customer’s account would have access to the database.
While cloud providers don’t host multiple customers on the same hardware simultaneously, they do lease the hardware to new customers as soon as one customer is done with it.
Correct answerHosting services, including cloud platforms, typically use the same hardware to host services for multiple customers at the same time.Resources hosted on public cloud platforms are accessible to anyone with an Internet connection.Cloud platforms have less-granular access controls than local servers, so every application running in the customer’s account would have access to the database.While cloud providers don’t host multiple customers on the same hardware simultaneously, they do lease the hardware to new customers as soon as one customer is done with it.Overall explanationCorrect Answer: Cloud providers typically host multiple users on the same hardware (unless they pay a significant premium for dedicated instances). If one customer using the hardware exploits security faults in the host system, they may gain access to the data of other customers hosted on that hardware. Incorrect Answer: Resources hosted in the cloud may or may not be accessible to the general public. Cloud platform access controls can be just as granular as on local servers. In addition to hosting multiple customers on the same hardware, providers also re-use that hardware to host other customers later. They typically scrub customer data from the hardware first, so this isn’t as risky as simultaneously sharing the same hardware with other customers.DomainVirtualization and Cloud Computing
Question 28:
Mike’s newly configured computer (using manual IP settings) can’t access a Web site by its fully-qualified domain name (FQDN), but he can access it by the Web site’s IP address. Everyone else on the network can access the site by the FQDN. Which of the following is the MOST likely problem?
The computer’s DNS settings are incorrect.
The computer’s DNS server is down.
The computer’s DNS Client service is disabled.
The computer does not have DNS permissions enabled on the default gateway.
Correct answerThe computer’s DNS settings are incorrect.The computer’s DNS server is down.The computer’s DNS Client service is disabled.The computer does not have DNS permissions enabled on the default gateway.Overall explanationCorrect: Your DNS settings are incorrect. Given that most systems use DHCP, it’s rare to have a problem like this, but if you typed in invalid manual DNS settings into your NIC’s Properties, this can happen. Incorrect: If you were to turn off the DNS Client service on your computer, you would get this problem. However, there is a much smaller chance that this service would be disabled than that someone had entered an invalid DNS service IP address. In a single network, everyone USUALLY uses the same DNS server, so if the DNS server is down for you, it’s down for everyone else. Granted, you might have a different DNS server, so this answer is valid, but not as valid as entering an invalid DNS server IP address. Routers don’t have an item in their Access Control Lists called “DNS permissions”. You COULD block DNS from getting through your router by blocking port 53 (DNS), but then no one could get DNS access. Most routers have the ability to block a port number for a single IP or MAC address, but, again, it’s simply too unlikely.DomainNetworking
Question 29:
Which of the following symptoms is most indicative of a bad sensor on a laser printer?
Paper jam error but no jammed paper
Blank pages printed without errors
Paper is picked up in twos and threes
Spontaneous printer reboots
Correct answerPaper jam error but no jammed paperBlank pages printed without errorsPaper is picked up in twos and threesSpontaneous printer rebootsOverall explanationCorrect: A paper jam error with no jammed paper is a clear sign of a faulty sensor. Incorrect: Paper picked up in twos and threes is indicative of too much moisture in the paper. Blank pages are most likely due to nothing more than low toner. Spontaneous printer reboots, just like with PCs, points to a bad power supply.DomainHardware and Network Troubleshooting
Question 30:
A PCIe video power connector has how many pins? (Choose two.)
8
20
4
24
6
Correct selection820424Correct selection6Overall explanationCorrect Answers: PCIe power connectors can come in 6-pin and 8-pin varieties depending on what is needed. Both deliver an additional 12 volts for advanced video cards. The 6-pin connector officially supplies 75 watts of extra power for video cards, while the 8-pin connector supplies up to 150 watts. While installing an 8-pin PCIe power connector, be careful not confuse it with the 8-pin EPS connector for your motherboard. You might just see some sparks fly! Incorrect Answers: The 4-pin power connector is for the traditional Molex connector. The 20- & 24-pin power connectors are known as the ATX power connector, or sometimes the “P1” connector. Which one you have usually depends on the age of your motherboard and power supply and what their requirements are.DomainHardware
Question 31:
What is the “DDRXXX” rating for PC3200?
400MHz
100MHz
320MHz
200MHz
Correct answer400MHz100MHz320MHz200MHzOverall explanationCorrect Answer: 400MHz. The term “PC3200” tells us this is DDR. You can calculate the DDR rating simply by dividing by eight. Incorrect Answers: 320MHz would be PC2560, which doesn’t exist. 200MHz would be PC1600. 100MHz would be PC800, which doesn’t exist.DomainHardware
Question 32:
Which of the following statements is true regarding scanners?
The higher the scanner resolution, the larger the image file.
Scanners might need more internal memory to scan at higher resolutions.
The higher the resolution, the faster the image scans.
The brighter the image, the brighter the imaging lamp.
Correct answerThe higher the scanner resolution, the larger the image file.Scanners might need more internal memory to scan at higher resolutions.The higher the resolution, the faster the image scans.The brighter the image, the brighter the imaging lamp.Overall explanationCorrect Answer: Increasing the resolution makes for more pixel data to store, and therefore larger image files. Incorrect Answers: The other statements are false, the correct statements would be:The higher the resolution, the slower the image scans.Scanners do require more internal memory to scan at higher resolutions.Imaging lamps can vary brightness, but it adjust for quality and clarity, not brightness of the image.DomainHardware
Question 33:
New smart phones have features that enable them to be backed up to a remote location. Of which of the following is this an example?
Desktop Manager
iCloud
iOS
App Market
Desktop ManagerCorrect answeriCloudiOSApp MarketOverall explanationCorrect Answer: iCloud is an example of a remote backup solution for iOS mobile devices. Incorrect Answers: Desktop Manager is synchronization software for Blackberry devices. iOS is the operating system running on Apple mobile devices. App Market is a made-up term.DomainMobile Devices
Question 34:
You are called to check on a printer that is printing out gibberish. Of the following problems, which should you first suspect?
Bad printer power supply
Corrupted printer driver
Bad primary corona
Bad printer connection
Bad printer power supplyCorrect answerCorrupted printer driverBad primary coronaBad printer connectionOverall explanationCorrect: Gibberish printing is the classic symptom of a corrupted printer driver. Delete the printer and reinstall it. Incorrect: In rare circumstances, a bad printer connection could cause gibberish, but it’s incredibly rare. Usually, a bad connection simply prevents printing. Depending on the printer, a bad primary corona would make a completely black or completely blank printout. A bad printer power supply would keep the printer from turning on.DomainHardware and Network Troubleshooting
Question 35:
Which of the following is an example of an Automatic Private IP Address (APIPA)?
196.254.3.4
169.254.3.17
192.254.4.17
192.168.5.3
196.254.3.4Correct answer169.254.3.17192.254.4.17192.168.5.3Overall explanationCorrect Answer: 169.254.3.17 is an example of an Automatic Private IP Address. All APIPA addresses must start with 169.254. Incorrect Answers: The other answers are incorrect as all APIPAaddress must begin with 169.254.DomainNetworking
Question 36:
Which of the following components would be utilized most when using virtualization? (Select two.)
Dual-rail 1000w PSU
High-end sound card
Quad core CPU
High-end video card
Maximum memory
Dual-rail 1000w PSUHigh-end sound cardCorrect selectionQuad core CPUHigh-end video cardCorrect selectionMaximum memoryOverall explanationCorrect Answers: In order to properly manage and run all of the virtual machines, the virtualization server will need to have as much memory as possible as well as a multi-core CPU. Incorrect Answers: Having a high-end graphics card and high-end sound card is more important for a gaming PC. Those features are not needed in a virtualization server. A dual-rail 1000w PSU would also probably be needed in a gaming computer where you have multiple graphics cards that require a lot of extra power.DomainVirtualization and Cloud Computing
Question 37:
Under outdoor conditions, the 802.11g standard supports data throughput of up to _______________ and has a range of up to _______________.
54 Mbps / 250 meters
11 Mbps / 140 meters
11 Mbps / 120 meters
54 Mbps / 140 meters
54 Mbps / 250 meters11 Mbps / 140 meters11 Mbps / 120 metersCorrect answer54 Mbps / 140 metersOverall explanationCorrect Answer: Under ideal, outdoor conditions, the 802.11g standard supports data throughput of up to 54 Mbps and has a range of up to 140 meters. Incorrect Answers: 802.11b has a data throughput of 11 Mbps at 140 meters. 802.11a has a data throughput of 54 Mbps at 120 meters. 802.11n has a data throught of 150+ Mbps at 250 meters.DomainNetworking
Question 38:
Gregor installed a third stick of known-good RAM into his Core i7 system, bringing the total amount of RAM up to 3 GB. Within a few days, though, he started having random lockups and reboots, especially when doing memory intensive tasks such as gaming. What is most likely the problem?
Gregor installed DDR2 RAM into a DDR3 system.
Gregor installed RAM that exceeded the speed of the RAM in the system.
Gregor installed RAM that didn’t match the speed or quality of the RAM in the system.
Gregor installed DDR RAM into a DDR2 system.
Gregor installed DDR2 RAM into a DDR3 system.Gregor installed RAM that exceeded the speed of the RAM in the system.Correct answerGregor installed RAM that didn’t match the speed or quality of the RAM in the system.Gregor installed DDR RAM into a DDR2 system.Overall explanationCorrect: Most likely, Gregor installed RAM that didn’t match the speed or quality of the RAM in the system. Incorrect: Installing one type of RAM into a another type of RAM slot is very difficult due to pin differences and keying differences. Although you can install more RAMthat a motherboard will run, it would not report the RAMamount correctly.DomainHardware and Network Troubleshooting
Question 39:
When putting a mobile device into airplane mode, which of the following features is typically disabled? (Select two.)
Multi-touch ability
Wireless
Data encryption
Cellular data
SD storage
Multi-touch abilityCorrect selectionWirelessData encryptionCorrect selectionCellular dataSD storageOverall explanationCorrect Answers: Airplane mode disables all networking abilities, such as cellular data and Wi-Fi. This prevents the phone from disrupting the airplane’s communications. Incorrect Answers: Airplane mode doesn’t disable any of the other listed features because they don’t interfere with airline communication.DomainMobile Devices
Question 40:
The link light on the NIC of Rob’s desktop normally glows yellow, but when he moved the PC to a construction trailer and plugged it in, it glowed green. The PC and networking run well, but Rob is confused about the color change. What could cause this?
There’s too much network activity.
Moving the system has affected the color of the link light.
He’s on a different speed LAN.
He’s not on the Internet.
There’s too much network activity.Moving the system has affected the color of the link light.Correct answerHe’s on a different speed LAN.He’s not on the Internet.Overall explanationCorrect: Many multispeed NICs show their connection speed by the color of the link light. Incorrect: The PC and networking are stated as working fine, so too much network activity or an inability to access the Internet are the cause.Moving the system would not affect the link light color.DomainHardware
Question 41:
What is “duplex printing”?
Automatic printer collation
Inline binding of the paper
Two-way printer communication
Printing on both sides of the paper
Automatic printer collationInline binding of the paperTwo-way printer communicationCorrect answerPrinting on both sides of the paperOverall explanationCorrect Answer: Duplex printing is the process of printing on both sides of a sheet of paper. Incorrect Answers: Collation is to stack in an organized fashion. Binding is to create something like a book or magazine. Inline biding of the paper is not a valid printing option.DomainHardware
Question 42:
Virtually all home routers today are configured using:
Telnet
A web interface
Their own keyboard and mouse
BIOS
TelnetCorrect answerA web interfaceTheir own keyboard and mouseBIOSOverall explanationCorrect Answer: Almost all modern home routers use a web interface. Incorrect Answers: There may be some old routers that use telnet or even their own keyboard and mouse, but modern home routers use a web interface. BIOSis not a way to configure a home router, it is used to perform hardware initialization during the boot process.DomainNetworking
Question 43:
Which of the following is always a feature of a riser card?
Riser cards always contain multiple expansion slots
Riser cards only work with PCI
Riser cards are limited to 1/2 CPU speed
Riser cards do not work with PCIe
Correct answerRiser cards always contain multiple expansion slotsRiser cards only work with PCIRiser cards are limited to 1/2 CPU speedRiser cards do not work with PCIeOverall explanationCorrect Answer: The primary function of a riser card is to provide multiple expansion slots from a single slot. Incorrect Answers: The other answers are incorrect. Riser cards come in both PCI and PCIe flavors.Riser cards are not limited to 1/2 CPUspeed.DomainHardware
Question 44:
According to the CompTIA A+ troubleshooting methodology, at what point during the troubleshooting process should you back up the computer?
When identifying the problem.
When establishing a theory of probable cause.
When testing the theory to determine cause.
When establishing a plan of action to resolve the problem and implementing the solution.
Correct answerWhen identifying the problem.When establishing a theory of probable cause.When testing the theory to determine cause.When establishing a plan of action to resolve the problem and implementing the solution.Overall explanationCorrect Answer: When identifying the problem is the best time to do some back ups. Before making any changes to the system, you should always back it up. Incorrect: When you establishing a theory, testing your theory, or implementing a plan of action, you are more likely to be doing some significant changes to their computer. Back up before any of that!DomainHardware and Network Troubleshooting
Question 45:
The IP address 3.4.15.124 is an example of which of the following class licenses?
Class C
Class A
Class D
Class B
Class CCorrect answerClass AClass DClass BOverall explanationCorrect: This is a Class A address. The Class A first octet is from 1 to 126. Incorrect: The Class B first octet is from 128 to 191. The Class C first octet is from 192 to 223. The Class D first octet is from 224 to 239.DomainNetworking
Question 46:
To push a CPU faster than its rated speed is to _______ the CPU.
Overdrive
Overclock
Overspeed
Overpower
OverdriveCorrect answerOverclockOverspeedOverpowerOverall explanationCorrect Answer: The correct term is overclock. Incorrect Answers: OverDrive was an ancient type of CPU. Overspeed and Overpower are not valid common terms for pushing a CPUs speed.DomainHardware
Question 47:
A user who travels a lot wants 24/7 Internet access on her laptop. Which of the following would you recommend for her connection?
Bluetooth
802.11
Cellular WAN
Infrared
Bluetooth802.11Correct answerCellular WANInfraredOverall explanationCorrect Answers: Of the choices given, only cellular WANs have the ability to provide 24/7 Internet access virtually anywhere she goes that has cell reception. Incorrect Answers: The other three options have limited range compared to cellular WANs and would not be as effective. Cellular WANs offer the longest wave length for reception.DomainNetworking
Question 48:
Your PC’s power supply is rated by its output _________ .
Joules
Amps
Watts
Farads
JoulesAmpsCorrect answerWattsFaradsOverall explanationCorrect: PC power supplies are measured by their output watts. This number is the maximum wattage the power supply can provide. Incorrect: An amp is the amount of electrons moving past a certain point on a wire. A joule is the amount of work done by a force of one Newton moving an object through a distance of one meter. Surge suppressors are often rated in joules. A farad is the charge a capacitor will accept for the potential across it to change 1 volt. More importantly, it is not how power supplies are rated.DomainHardware
Question 49:
A technician, trying to upgrade the RAM in a laptop, opens the bottom of the case to discover that there is only one RAM slot when there are supposed to be two. Where might the other slot be?
Above the PC card slot
Under the keyboard
Second hard drive bay
Inside the display bezel
Above the PC card slotCorrect answerUnder the keyboardSecond hard drive bayInside the display bezelOverall explanationCorrect Answer: Laptops are designed to be small, so component placement is not always convenient for a tech. The second RAM slot is commonly under the keyboard. Some modern laptops may also have RAMintegrated in the motherboard which makes upgrading impossible.Incorrect Answers: The other locations usually do not hide a RAM slotDomainMobile Devices
Question 50:
Margarita has seen plenty of System setup screens over the years, but when she presses DEL at boot on her new laptop, she sees two password options: “Setup” and “System.” What are the more common terms for “Setup” and “System,” respectively?
User and Root
User and Supervisor
Administrator and User
Supervisor and User
User and RootUser and SupervisorAdministrator and UserCorrect answerSupervisor and UserOverall explanationCorrect Answer: Some computer manufacturers use the terms “Setup” and “System” rather than the classic terms “Supervisor” and “User,” but the options still perform the same functions. Incorrect Answers: Administrator and user passwords are used with Windows. User and Root passwords are more commonly associated with Linux systems. User and Supervisor is just a made-up answer for your benefit.DomainHardware
