Deck #000 Flashcards
CompTia 220-90X, 100X
Which of the following are components you might find inside a PC? (Select the three best answers.)
a) CPU
b) Motherboard
c) Keyboard
d) Printer
e) RAM
f) Cable modem
Answer: a, b, e
Which device stores data over the long term?
a) CPU
b) RAM
c) Hard drive
d) Video card
Answer: C Hard drive
You would normally plug speakers into which type of port?
a) FireWire
b) DVI
c) 1/8-inch TRS
d) 1/4-inch TRS
Answer: c
Which process of the computer checks all your components during boot?
a) CMOS
b) POST
c) BIOS
d) EEPROM
Answer: b
Which of the following is not considered a system component that can be found inside a computer?
a) CPU
b) RAM
c) PCIe graphics adapter
d) Motherboard
Answer: C. PCIe graphics adapter
System components are essential for the basic functionality of a computer system. Many of the landmarks found on the motherboard can be considered system components, even expansion slots, to a degree. What you plug into those slots, however, must be considered peripheral to the basic operation of the system.
Which of the following is not a requirement for a NAS?
a) Dual monitors
b) File sharing services
c) Gigabit NIC
d) RAID array
A. Dual monitors
Dual monitors are not required for a network-attached storage (NAS) device; it might not even use a monitor. A NAS will use file sharing and benefit from a Gigabit NIC and RAID array.
When setting up two NFC devices, what is the name of the mode that allows the two devices to transmit data to each other?
a) Emulation mode
b) Peer-to-peer mode
c) Reader/writer mode
d) Ad hoc mode
B. Peer-to-peer mode
Card emulation mode, reader/writer mode, and peer-to-peer mode are the three valid NFC communication modes. For two devices to transmit to each other, they will use peer-to-peer mode.
Your laptop has 4 GB of installed memory and uses shared video memory. If the video card is using 512 MB, how much is left for the rest of the system?
a) 4 GB
b) 3.5 GB
c) 512 MB
d) Cannot determine
B. 3.5 GB
If the laptop is using shared video memory, then the system memory is shared with the video card. If the video card is using 512 MB (half a gigabyte), then there is 3.5 GB left for the system.
Which service was created by Apple to allow iPhones and iPads to print without installing printer drivers?
a) TCP printing
b) Bonjour
c) AirPrint
d) iPrint
C. AirPrint
AirPrint was created by Apple to let iPhones and iPads print without installing a printer driver.
You are buying optical discs and need to ensure that they have large capacity. What suffix indicates that the capacity of an optical disc is roughly twice that of its standard counterpart?
a) DL DL
b) R
c) RW
d) RE
A. DL
DL stands for double (or dual) layer. With DVDs, the capacity almost doubles, but with Blu-ray Discs, it actually does. R means recordable, and RW and RE are used to designate re-writeable or re-recordable, respectively.
One of your network users was recently caught at work browsing pornographic websites. Which of the following servers could be installed to prohibit this activity?
a) Web
b) Security
c) Proxy
d) DNS
C. Proxy
A proxy server can be configured to block access to websites containing potentially objectionable material. Web servers host websites. There is no specific security server, although there are authentication servers, which provide security. A DNS server resolves host names to IP addresses.
When using a capacitive touchscreen on a mobile device, what is the most common tool used to input data?
a) Keyboard
b) Trackball
c) Stylus
d) Finger
D. Finger
Capacitive touchscreens react to slight changes in electrical charges. The human finger is used as an input device for capacitive touchscreens.
Which of the following is a company that provides direct access to the Internet for home and business computer users?
a) ASP
b) ISP
c) DNS
d) DNP
B. ISP
An Internet service provider (ISP) provides direct access to the Internet. ASP is a programming language. DNS resolves host names to IP addresses. DNP is not a computer networking acronym.
Which type of software is required to run client-side virtualization on your home network?
a) Terminal emulation
b) Process replication
c) Hyper threading
d) Hypervisor
D. Hypervisor
The hypervisor is the key piece of software needed for virtualization. Terminal emulation, process replication, and hyperthreading are not related to client-side virtualization.
A network cable has not been working properly. Another technician suggests testing the resistance on the cable. Which tools may be capable of doing this? (Choose two.)
a) Loopback plug
b) Multimeter
c) Cable tester
d) Tone generator and probe
Answer:
B. Multimeter
C. Cable tester
A multimeter is specifically designed to test for electrical characteristics, so it would be the best tool to choose. Cable testers are for verifying that a cable works properly; some are capable of testing resistance. A loopback plug is for testing the ability of a network adapter to send and receive. A tone generator and probe is used to trace a cable from one location to another.
Which of the following are components that can commonly be found on a motherboard? (Choose all that apply.)
a) Slots
b) Fan connectors
c) Gyroscope
d) Scanner
e) HDD
A. Slots
B. Fan connectors
Motherboards commonly have RAM slots and expansion slots. Older motherboards even had CPU slots. Modern motherboards have connectors for powering cooling fans. Gyroscopes are most commonly found in mobile devices. Scanners are external devices. Although there might be one or more types of HDD interfaces built into the motherboard, the HDD itself is not.
Which of the following connectors will you not find on the end of a USB cable? (Choose two.)
a) Lightning
b) USB-C
c) Molex
d) DB-9
e) eSATA
Answer:
C. Molex
D. DB-9
USB cables are multipurpose cables that connect many types of peripherals. Connectors include USB-C, Lightning, and eSATA. Molex connectors provide power to PATA hard drives and optical drives. A DB-9 connector is found on the end of a serial cable. See Chapter 3 for more information.
Which of the following is a standard computer that can access resources locally as well as from servers but requires no specialized enhancements?
a) Gaming PC
b) Network-attached storage
c) Thin client
d) Thick client
D. Thick client
A thick client is any computer system with a standard configuration. The gaming PC has enhancements over thick clients to their CPU, video, audio, and cooling. The NAS (network-attached storage) must have specialized capabilities and services along with a faster NIC than the thick client and a RAID array. The thin client is a lesser device in comparison to the thick client, but that cost-saving feature is its enhancement. These less expensive computers can connect over the network to servers for their operating system images and applications. See Chapter 4 for more information.
What is the function of the laser in a laser printer?
a) It heats up the toner so that it adheres to the page.
b) It charges the paper so that it will attract toner.
c) It creates an image of the page on the drum.
d) It cleans the drum before a page is printed.
C. It creates an image of the page on the drum.
The laser creates an image on the photosensitive drum that is then transferred to the paper by the transfer corona. The fuser heats up the toner so that it adheres to the page. The transfer corona charges the page, and the eraser lamp cleans the drum before a page is printed. A rubber blade is also used to remove toner physically from the drum. See Chapter 5 for more information.
The ____________ is the measurement of the number of pixels an LCD monitor can display without the image appearing distorted.
a) Native resolution
b) Contrast ratio
c) Maximum resolution
d) Aspect ratio
A. Native resolution
The native resolution refers to how many pixels an LCD screen can display (across and down) without distortion. The native resolution is based on the placement of the actual transistors that create the image by twisting the liquid crystals. The contrast ratio is the measurement between the darkest color and the lightest color that an LCD screen can display. Monitors do not measure contrast ratio. Aspect ratio measures the width of the image versus its height.
Google Docs is an example of which type of cloud service?
a) SaaS
b) IaaS
c) PaaS
d) GaaS
A. SaaS
Google Docs is software, so it is an example of Software as a Service (SaaS). IaaS is Infrastructure as a Service. PaaS is Platform as a Service. GaaS is neither a test objective nor currently a cloud service type. See Chapter 9 for more information.
You want to create and send encrypted emails from your smartphone. What do you need to use?
a) POP3
b) SMTP
c) S/MIME
d) VPN
C. S/MIME
The Secure/Multipurpose Internet Mail Extensions (S/MIME) standard for public key encryption is used to create and read encrypted emails. POP3 and SMTP are standard email protocols. VPNs create a private network over a public network, but they do not encrypt email content
Which term refers to copying data between a mobile device and a computer system to mirror such things as contacts, programs, pictures, and music?
a) Calibration
b) Remote wipe
c) Pairing
d) Synchronization
D. Synchronization
Synchronizing a mobile device with a computer system allows you to mirror personal data between the devices, regardless of which one contains the most current data. Calibration refers to matching the device’s and user’s perceptions of where the user is touching the screen. Remote wipes allow you to remove personal data from a lost or stolen device. Pairing is what must be done in Bluetooth for two Bluetooth devices to connect and communicate. For more information.
You are replacing a power supply with a new one. What is the name of the standard power connector that has been used with larger hard drives since the first IBM personal computers were introduced?
a) AT system connector
b) Berg
c) Molex
d) ATX system connector
C. Molex
The standard peripheral power connector, or Molex connector, is commonly used on larger drives because it allows more current to flow to the drive than smaller peripheral connectors. AT and ATX system connectors are used to connect the power supply to the motherboard. A Berg connector was used for floppy disk drives.
