Test 02

Question 1

Which of the following devices should be installed as an intermediary between your clients and the web servers they want to connect to make an HTTP request from the client, check it, and then forward it to its destination?

A. Proxy Server
B. File Server
C. DHCP Server
D. DNS Server

Answer 1

A.

A proxy server takes a whole HTTP request from a client, checks it, then forwards it to the destination computer on the Internet. When the reply comes back, it checks it and then shuttles it back to the LAN computer. A proxy can be used for other types of traffic too. A proxy server can usually operate either as a transparent service, in which case the client requires no special configuration or as non-transparent.

Previously selected C

Question 2

Which of the following types of data should you transmit over TCP?

A. An order for $50,000 stock purchase
B. Streaming video from YouTube
C. A Skype phone call with your friend
D. Streaming music while you work.

Answer 2

A.

TCP (Transmission Control Protocol) is a slower but more reliable data delivery protocol. TCP is responsible for ensuring that packets arrive error-free and without loss. If you are doing something that must get to the destination without errors or data loss, such as a banking transaction or stock trade, it should be sent over TCP by your web browser. Web browsing over ports 80 and 443 uses TCP.

Question 3

Which of the following types of encryption is considered the most secure to utilize in a SOHO network?

A. WEP
B. WPS
C. WPA
D. WPA2

Answer 3

D.

WPA2 is the most secure option presented in this question. WPA2 utilizes a 128-bit or 256-bit encryption key to protect data in transit using the Advanced Encryption Standard (AES). If you use a strong password, WPA2 is considered extremely secure in modern networks.

Question 4

Which of the following is a public IP address?

A. 10.3.2.1
B. 192.168.2.1
C. 169.254.2.1
D. 8.4.2.1

Answer 4

D.

The IP address of 8.4.2.1 is public and is therefore routable. The IP address of 10.3.2.1 is a private Class A IP address, and therefore non-routable. The IP address of 192.168.2.1 is a private Class C IP address, and therefore non-routable. The IP address of 169.254.2.1 is an APIPA (Automatic Private IP Address), and therefore non-routable.

Question 5

Which of the following is an APIPA or link-local address?

A. 192.168.1.34
B. 33.52.7.83
C. 169.254.65.23
D. 127.0.0.1

Answer 5

C.

An APIPA (Automatic Private IP Address) is also known as a link-local address. The computer uses this address space when it fails to receive a dynamic IP from a DHCP server properly. APIPA addresses always take the form of 169.254.x.x.

Question 6

Which type of internet connection allows for high-speed bi-directional data communication over a hybrid fiber-coaxial (HFC) connection?

A. Fiber
B. ISDN
C. DSL
D. Cable

Answer 6

D.

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.

Question 7

You have been asked to install a new wireless network for your company’s new branch office. Your boss wants the network to be high-speed and is willing to buy new hardware and network adapters to ensure all the devices can communicate on the new network. Which of the following wireless standards should you install for the fastest data transfer speeds?

A. 802.11a
B. 802.11n
C. 802.11g
D. 802.11ac

Answer 7

D.

802.11ac networks are the fastest wireless networks in use today. They support speeds of up to 1 Gbps using the 5.0 GHz frequency band. 802.11n can use both 2.4 GHz and 5.0 GHz frequencies but only supports 108-600 Mbps speeds. 802.11a uses the 5.0 GHz frequency and supports 54 Mbps, while 802.11g uses the 2.4 GHz frequency and supports 54 Mbps.

Question 8

You are troubleshooting a memory issue on a customer’s laptop and have determined that the memory module needs to be replaced. You walk into the storage room to select a memory module to use as a replacement. Which of the following choices would be the MOST LIKELY choice for you to select for use on the laptop?

A. DDR4
B. Single Channel
C. ECC
D. SODIMM

Answer 8

D.

Small Outline Dual Inline Memory Modules (SODIMM) is a small form factor used in memory modules. SODIMM is used in nearly every laptop available. For the exam, if you see a question asking about memory and laptops, the answer will most likely be SODIMM. SODIMM is also heavily used in Micro PCs (like Mac Minis) and all-in-one computers due to their smaller size.

Question 9

What describes how many times the image on the monitor changes per second?

A. Aspect ratio
B. Refresh rate
C. Frame rate
D. Yaw rate

Answer 9

B.

Refresh rate is defined by the vertical scan frequency of a monitor and how many times in one second an image can be redrawn on the screen. LCD monitors have a fixed refresh rate based on the specifications of its panel. Generally, a monitor is rated with a refresh rate of 60 Hz, 72 Hz, or 120 Hz, with the higher refresh rate being considered better quality and easier on the user’s eyes. For high-performance gaming systems, a 120 Hz monitor is desired for smoother motion and graphics.

Question 10

Jennifer just moved from France to the United States. She unpacks her computer and plugs it into the wall using a power adapter to ensure the plug connects properly. When she tries to power on the computer, the screen remains blank, she doesn’t hear the fans spinning, and nothing appears to be happening. What is MOST likely the problem?

A. The power supply’s output is set to 115V
B. The power supply’s input is set to 220V
C. The power supply’s output is set to 220V
D. The power supply’s input is set to 115V

Answer 10

B.

It is always important to ensure the correct power supply input setting is used for your computer based on the location in which you are using it. In Europe, the nominal voltage of a power outlet is 220V. Therefore, Jennifer’s computer is probably still selected for a power supply input setting of 220V. In the United States, the nominal voltage is 115V. Therefore, Jennifer needs to flip the power configuration switch on the power supply’s input selector from 220V to 115V to operate properly. If the computer was incorrectly set to 115V and plugged into a 220V outlet, the power supply could be destroyed or caught fire.

Question 11

Which RAID solution will provide the BEST speed and redundancy for a backup and disaster recovery server?

A. RAID 0
B. RAID 1
C. RAID 5
D. RAID 10

Answer 11

D.

RAID 10 provides the system with both speed and efficiency. With RAID 10, the system has a mirror of striped disks for full redundancy and double fault tolerance. RAID 10 configuration (also known as RAID 1+0) requires a minimum of four disks and mirrors data across a striped disk pair. This is not only the best option presented in this question but also the most expensive option.

Question 12

Your boss wants to be able to remotely print from her laptop and smartphone while away from the office. She asks you to set up a method to ensure that she doesn’t have to go back to her office to print a document. Which of the following should be configured to meet this requirement?

A. Integrated print server
B. Cloud printing
C. WiFi printing
D. Bluetooth printing

Answer 12

B.

In this case, your boss asked for a simple way to print from her mobile devices when she is out of the office. Therefore, you should configure cloud printing. For example, Google’s Cloud Print allows a user to print from any device in the world, regardless of their current location. After printing, the printed papers would be ready in her office when she returns.

Question 13

You have signed up for a web-based appointment scheduling application to help you manage your new IT technical support business. What type of solution would this be categorized as?

A. DaaS
B. PaaS
C. IaaS
D. SaaS

Answer 13

D.

Software as a Service (SaaS) is used to provide web applications to end-users. This can be a calendar, scheduling, invoicing, word processor, database, or other programs. For example, Google Docs and Officer 365 are both word processing SaaS solutions. QuickBooks Online is one example of a SaaS solution for accounting.

Question 14

Which of the following is a security concern with using a cloud service provider and could result in a data breach caused by data remnants?

A. Rapid elasticity
B. Metered services
C. On-Demand
D. Resource Pooling

Answer 14

A.

Rapid elasticity can be a security threat to your organization’s data due to data remanences. Data remanence is the residual representation of digital data that remains even after attempts have been made to remove or erase it. So, when a cloud resource is deprovisioned and returned to the cloud service provider, it can be issued to another organization for use. If the data was not properly erased from the underlying storage, it could be exposed to the other organization. For this reason, all cloud-based storage drives should be encrypted by default to prevent data remanence from being read by others.

Question 15

During a disaster recovery, which of the following statements is true?

A. A virtual machine has less downtime than a physical sever
B. A virtual machine has more downtime than a physical sever
C. Both a virtual server and physical server has the same downtime
D. A virtual machine cannot be used for redundancy or load balancing

Answer 15

A.

A virtual machine can usually be restored much faster than a physical server. Physical servers must be modified to fit the right drivers for the disk drives, NIC, and other necessary components whenever they must be rebuilt after a crash. Often, a new physical server will also be required to replace a faulty one, and then the right drivers are needed to ensure a smooth transition. Conversely, a virtual machine can be recreated using another instance, clone, or restoration from a backup in much less time. Therefore, the downtime associated with virtual machines and their restoral is much lower.

Question 16

A client’s laptop appears to have been infected with malware. You have begun troubleshooting, established a plan of action, and have already implemented your proposed solution. According to the best practice troubleshooting methodology, what is the NEXT step you should take?

A. Test the theory to determine the cause
B. Identify the problem
C. Verify full system functionality
D. Document findings, actions, outcomes

Answer 16

C.

CompTIA uses a six-step troubleshooting methodology to resolve problems.

(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 implement the solution.
(5) Verify full system functionality and, if applicable, implement preventative measures.
(6) Document findings, actions, and outcomes.

Question 17

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?

A. The smartphone’s RFID signal is low.
B. The laptop is out of range of the smartphone’s hotspot.
C. The wireless hotspot feature is throttling the cellular connection speed.
D. The SSID for the wireless hotspot is not being broadcasted

Answer 17

C.

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.

Question 18

You just replaced a failed motherboard in a corporate workstation and returned it to service. About an hour later, the customer complained that the workstation is randomly shutting down and rebooting itself. You suspect the memory module may be corrupt, and you perform a memory test, but the memory passes all of your tests. Which of the following should you attempt NEXT in troubleshooting this problem?

A. Reset the BIOS
B. Replace the RAM with ECC modules
C. Remove and reseat the RAM
D. Verify the case fans are clean and properly connected.

Answer 18

D.

If a workstation overheats, it will shutdown and/or reboot itself to protect the processor. This can occur if the case fans are clogged or become unplugged. By checking and reconnecting the case fans, the technician can rule out an overheating issue causing this problem.

Question 19

You attempt to log on to a Windows workstation, and an error message pops up that says there is a duplicate IP address detected on the network. You restart the workstation, but the same error is displayed when you attempt to log in again. Which of the following is MOST likely causing this error message to occur?

A. Both wireless and wired connections are enabled on the workstation
B. A static address has been configured on the workstation
C. You are logged into another workstation at the same time.
D. The workstation was recently moved from another location

Answer 19

B.

If you defined a static IP address for a workstation or network device, duplicate IP address conflicts may occur on a DHCP network. To resolve it, convert the workstation or network device with the static IP address. Or, you can exclude the static IP address from the DHCP scope on the DHCP server.

Question 20

Your son accidentally knocked his laptop off his desk while it was charging. Your son picks up the laptop and notices that the laptop will no longer turn on. You begin to troubleshoot the problem to identify the cause. You ensure the laptop is connected to the power adapter and that the power adapter is plugged into a power outlet, but the laptop still will not power on. Which of the following components was MOST likely damaged when the laptop was knocked off of the desk?

A. DC jack
B. Hard drive
C. Battery
D. Power adapter

Answer 20

A.

One of the most important parts of any good laptop is the DC power jack. This item allows you to charge your battery and provides you with a steady source of electricity. If it fails, your laptop will lose power and eventually be unable to turn it on. If your battery won’t charge or will only charge if the connection is made at a certain angle, this is usually an indication that the DC power jack has failed. The most likely cause is that the DC jack was damage before (possibly from a previous accident). Therefore, the battery never charged properly, and now the DC jack is completely broken and providing no power to the laptop.

Question 21

Josie from Human Resources was just issued a new laptop from the company. When she plugs the laptop into the network’s wall jack and turns it on, she receives an error message. She calls the service desk to report that the error message being displayed states, “There is an IP address conflict with another system on the network.” You are working as a field service technician and have been asked to resolve this error. What should you do?

A. Configure the laptop’s network connection to use DHCP instead of a static IP
B. Replace the wired network adapter on the laptop since it is faulty
C. Disable the wired network adapter and require the laptop to use the wireless network adapter instead
D. Choose a new IP address and statically assign it to the laptop

Answer 21

A.

This is a common error when two network devices are assigned the same IP address on a network. This occurs most commonly when static IP addresses are used, so the easiest way to avoid this issue is to use DHCP to assign the IP addresses on the network. Forcing the user to use wireless over wired may solve the issue temporarily, but this is more of a workaround than a true solution to the error. It would be best if you didn’t randomly choose a new IP and statically assign it to the laptop since this will lead to more future conflicts. You shouldn’t remove the static IP configuration from the desktop computer if the error you received is on the laptop.

Question 22

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?

A. The workstation couldn’t reach the DHCP server
B. The workstation couldn’t reach the DNS server
C. The workstation couldn’t reach the gateway
D. The workstation couldn’t reach the proxy server

Answer 22

A.

Since the workstation has an APIPA address, this indicates that it could not successfully reach the DHCP server and get a DHCP-enabled IP configuration.

Question 23

You are troubleshooting a laser printer and noticed the paper’s image has a white streak running across the face of the paper. Which of the following should be performed to fix this issue?

A. Replace the printer’s drum
B. Clean the printer’s corona wires
C. Clean the printer’s fusing assembly
D. Replace the toner cartridge

Answer 23

C.

A corona wire is a charged wire in a laser printer that draws the toner off the drum onto the paper. It must be cleaned when the toner cartridge is replaced. A dirty corona wire can cause a portion of the drum not to be charged properly and lead to a white streak appearing on the printed image.

Question 24

You just received a phone call from one of your customers regarding an old monitor. The monitor uses a VGA port, and the customer is worried because they only have an old VGA cable that has a few pins broken off. The customer asks you what would happen if they used that cable to connect the monitor over VGA. What would MOST likely happen?

A. The display will show incorrect colors on screen.
B. The monitor will be black and white
C. The monitor will cause distorted images on screen
D. The monitor will be dim or start to flicker

Answer 24

A.

Unfortunately, a missing or broken pin or two can cause an array of issues. Each of the 15 pins is used to create a composite image on the screen. There are three rows of pins, with 5 pins per row. Due to the pinout of a VGA cable, if pins 1, 2, or 3 are missing, the display will be miscolored. If pins 13 or 14 are missing, the screen will not hold horizontal or vertical sync. The other pins are not used or are used as ground wires. Therefore, either the incorrect colors will show up on the screen, or the screen won’t display at all. The other options are not possible.

Question 25

What is the simplest and most cost-efficient way to allow other network users to access a printer if the printer does not have an RJ-45 or WiFi adapter available?

A. Establish a print share on the local host
B. Order a printer port converter to share a non-networked printer
C. Establish a printer share on the network switch
D. Order another printer with network capabilities and share it on the network

Answer 25

A

The simplest and most cost-efficient way to share a printer is to share the printer via the local host and allow sharing across everyone to access the printer. While this costs nothing to establish and requires no additional hardware, it does require that the local host remains on 24 hours a day so that others can print to it at any time.

Question 26

You are troubleshooting an issue with an impact printer in an automotive service department. The printer has begun to print unevenly. As the print head goes from left to right across the page, the printout goes from darker to lighter. What is the MOST likely cause of this issue?

A. Worn out printer ribbon
B. Clogged print head
C. Broken feed assembly
D. Defective ribbon advance mechanism

Answer 26

D.

An impact printer has teeth along the paper’s edges that pull the paper along a tractor as it prints. This moves the paper up one line at a time. The print head moves from left to right across the page, impacting the print head through the ribbon to mark the paper. If the ribbon advance mechanism is defective, the ribbon will not advance as the print head goes across the page, leading to a lightening of the ink being marked on the paper. If the printer ribbon itself were worn out, it would be lighter in color as you went down the page (not from left to right).

Question 27

You have been asked to fix an old computer whose CD-ROM has stopped working. The CD-ROM drive is using a 40-pin ribbon cable, and you suspect the cable is defective. Which cable should you buy to replace the cable?

A. SATA
B. IDE
C. USB
D. eSATA

Answer 27

B.

An IDE (Integrated Drive Electronics) cable is an older cable interface that used to be used for the transmission of data between the motherboard and various internal devices like hard drives and CD-ROM drives. A IDE cable is a 40-pin ribbon cable that operated at relatively slow speeds (less than 50 mbps). IDE cables were also known as PATA (Parallel ATA) cables, as opposed to SATA (Serial ATA) cables. It is rare that you will come across an IDE cable in use today, but if you are working on a very old computer in an office (legacy machine), there is a chace you will have to work with one.

Question 28

You are setting up a cable television in a customer’s home. Which connector type should be used to connect the TV tuner to the wall jack when using a coaxial cable?

A. CAT-5e
B. RJ-45
C. RG-6
D. DB-9

Answer 28

C.

An RG-6 connector is used with a coaxial cable. A coaxial cable is used to connect a TV tuner to the wall jack. Anytime you are asked about a coaxial cable connector, your answer will be RG-6 or RG-59. An RG-6 cable uses a heavier gauge than an RG-59. It has insulation and shielding tuned for high-bandwidth, high-frequency applications such as the Internet, Cable TV, and Satellite TV. If you are using an older, analog cable television, you could use an RG-59, though.