CompTIA Practice Review

You are currently running a video editing application on your Windows 11 laptop. The laptop includes both an SSD drive and a traditional hard drive.

You run the video application on the hard drive, but you would like to install and run the app from the SSD drive to enhance performance speed.

Which of the following should you do to protect the video application and associated data files from drive failure when you move them to the SSD drive?

Configure an automatic backup to the hard disk drive.

Which of the following is the most common disk interface used for optical drives on home and office computers?

SATA

A technician is tasked with adding a valid certificate to a mobile device so that encrypted emails can be opened.

Which of the following email protocols is best for the technician to use?

S/MIME

Your monitor is displaying images in strange colors.

Which of the following is MOST likely the solution to this problem?

Increase the color depth.

You are a computer technician. A user reports that an older laptop is having trouble connecting with newer wireless networks.

Which of the following actions should you consider as an alternative to replacing the laptop?

Replace the internal wireless card.

Which of the following protocols is often combined with TCP to send data across the internet?

IP

After replacing a laptop touchpad, a technician finds that the touchpad does not move the cursor. However, the attached USB mouse does.

Which of the following actions should the technician perform before opening the laptop case to re-check the connection?

Unplug the USB mouse and re-check touchpad movements.

Since it has no moving parts, a CPU will usually work properly for several years.

Which of the following is a common factor that might cause a CPU to fail prematurely?

Electrostatic discharge (ESD)

Which of the following BEST describes the Platform as a Service (PaaS) cloud computing service model?

PaaS delivers everything a developer needs to build an application on the existing cloud infrastructure.

You have subscribed to a satellite radio service that you use in your car to access music and news on long trips through areas where cellular service is not available.

However, when going through long tunnels and heavily forested canyons, you sometimes lose your signal for a short period of time.

Which of the following satellite technologies is your service provider using?

GEO

Vera has brought her laptop computer to you for repair. After listening to her describe its symptoms, you decide that the laptop may have a malfunctioning keyboard.

Check for special keyboard features that could be enabled that may cause some keys to perform alternate tasks.

Connect an external keyboard.

You have purchased a new notebook. This notebook system uses UEFI firmware and comes with Windows 11 preinstalled. However, you want to use Linux on this system.

You download your favorite distribution and install it on the system, removing all Windows partitions on the hard disk in the process. When the installation is complete, you find that the operating system won't load when the system is rebooted.

Disable SecureBoot in the UEFI configuration.

Which of the following components of a IPv4 address will be unique for each network device?

Host ID

You have just finished replacing the motherboard in your friend Ethan's computer with the same type of motherboard that the computer had originally. You tested the motherboard by powering it on and by verifying that the operating system started and that the applications work.

Now Ethan is complaining that his computer no longer recognizes his external hard drive, which he had connected to the previous motherboard.

Which of the following is MOST likely causing the external hard drive not to function?

The USB front panel connector was not properly connected.

Which type of embedded device microprocessor is custom designed to perform a specific function?

ASIC

• PCI slot (top-left, colored white): used to connect PCI expansion boards.

• PCIe x16 slots (right of the PCI slot, colored blue): used to connect PCIe x16 expansion boards.

• PCIe x1 slot (right of the PCIe x16 slots, colored white): used to connect PCIe x1 expansion boards.

As an IT technician for your company, you are in the process of setting up several servers in your network. During the process, one of the servers was misconfigured and is having trouble synchronizing information with the other servers.

Which of the following is the BEST next step?

Gather information.

Your company cloud service currently provides data storage, processing, and network connectivity that hosts several services and applications used by your employees. You want to transition to a cloud service that provides many of these services and applications natively without the IT department needing to constantly maintain and update the services and applications. In addition, the IT department wants to make sure that the cloud service provides employees with resources that are segregated from other employees.

Which of the following cloud service solutions meets these requirements?

SaaS with a simple multi-tenancy implementation.

A technician is configuring the static TCP/IP settings on a client computer.

Which of the following configurations are needed for internet communications?

IP address with a subnet mask (IPv4) or subnet prefix length (IPv6)

DNS server address

Default gateway address

You are designing a wireless network for a client. Your client needs the network to support a data rate of at least 150 Mbps. In addition, the client already has a wireless telephone system installed that operates 2.4 GHz.

Which 802.11 standard works BEST in this situation?

802.11n

For the past few days, your mobile phone has stopped functioning and does not respond to touchscreen input. A soft reset no longer fixes the problem.

Which of the following is the BEST step you can take to fix this problem?

Reset to factory default.

You are an IT technician for your company. One of your employees calls and tells you that every time they turn their computer on, they hear three beeps.

Which of the following BEST describes the information you should relay to this employee about the beeping?

Three repeated beeps may mean different things. They need to reference the motherboard documentation.

Dual-channel memory systems only theoretically double memory bandwidth. What is the bandwidth increase in actual terms?

5-15%

You have an older computer that has four DDR2 memory slots. Currently, there are two 512-MB memory modules installed. You check the motherboard documentation and find that the system has a 4-GB memory limitation. You want to add more memory to this system.

What is the maximum total amount of usable RAM you can have in this system by adding new memory modules (and without replacing the existing memory modules)?

3 GB

Which of the following is the most common method for removing RAM from a motherboard?

Move the tabs holding the RAM out of the way; then pull straight up to remove the RAM.

You have just set up a food truck business, and you need to find a device that allows you to accept credit card and debit card payments through your smartphone.

Which of the following devices do you need?

Credit card reader

You want to implement name resolution on the Linux workstations in your company. Which protocol should you use to do this?

DNS

An employee in the sales department cannot get his laptop to display through a projector. He sees the screen output on the built-in laptop display, but the video is not being displayed through the projector.

Which of the following steps would be BEST to try first?

Use the fn key to redirect display to the external video port.

You suspect that the power supply in your desktop PC is failing. You want to use a multimeter to test the power supply. Which multimeter setting should you use?

DC Volts

Connection Types

• Hotspot - a physical location where you can obtain wireless internet access using a wireless local area network (WLAN) over a router that is connected to an internet service provider.

• Tethering - a means for connecting one device to another. In the context of mobile phones and tablet computers, tethering allows the sharing of the internet connection from a phone or tablet with other devices, like laptops.

• Mobile VPN - a mechanism that provides mobile devices with access to network resources and software applications on their home network (when the devices connect using other wireless or wired networks).

• NFC - a type of connector that is used to emulate cryptographic smart card functionalities for RFID tags or memory cards.

• Bluetooth - a wireless technology standard for exchanging data over short distances from fixed and mobile devices and for building personal area networks (PANs). Bluetooth can connect several devices, overcoming the problems of synchronization.

While using the touchpad on a laptop computer, you notice that the mouse is not responding very well, making it difficult to move the mouse around the screen.

Which of the following actions would MOST likely fix this problem?

Recalibrate the touchpad.

Sound is not coming from the internal speaker on a tablet device, even after a user checks the volume settings and makes sure that the tablet is not muted.

Which of the following is the MOST likely reason?

The audio output is being directed to a Bluetooth speaker.

A technician is tasked with replacing a Wi-Fi antenna in a laptop computer.

Which of the following places is the antenna MOST likely to be located in?

Around the laptop's bezel

While making an online bank transaction, a customer checks to see that the web browser is displaying a lock icon that indicates that an encrypted TCP/IP suite protocol is being used.

Which of the following TCP/IP port numbers does this protocol typically use when the browser encrypts its communications with the bank's web server?

443

Your company's graphic designers were given laptop computers several months ago. The laptops have a 500-GB SSD drive for the operating system and applications and a 1-TB hard drive for storing media files.

Now, a few of the graphic designers are complaining about slow performance on their SSD drives.

What is the MOST likely cause of the slow performance?

The designers are storing media files on the SSD drive.

You need to trace the route that a Cat 6 UTP cable takes through the ceiling and walls of your building. Which tool should you use?

Tone generator

A company executive has just bought a new Android mobile device. She wants you to help her make sure that it is protected from malware threats.

Which of the following statements are true in regards to protecting Android devices?

App reviews and ratings help you choose an effective antivirus app.

Antivirus apps are available for purchase from Android app stores.

You want to create a virtualization environment that runs directly on the host machine's hardware to manage the virtual machines.

Which of the following virtualization types should you use?

Type 1 hypervisor

Which of the following BEST describes the overall purpose of virtualization?

The ability to install and run multiple operating systems on a single physical machine.

You have purchased a 1600 x 1200 LCD monitor and connected it to the DVI-I port on your computer using a DVI-D cable. You configure the screen resolution at 1280 x 1024 with 24-bit color. The display output seems to be fuzzy and stretched.

Which of the following BEST describes the action you should take to correct the problem?

Change the screen resolution to the native resolution of the monitor.

Which of the following projector issues would MOST likely be caused by poor air flow through dirty vents in the projector?

Intermittent shutdowns

You have just set up a color laser printer on a customer's Windows workstation. You have connected the printer to the workstation using a USB cable and have loaded the appropriate drivers.

Which of the following are the BEST steps to take next?

Edit the printer's properties to configure paper tray and other device-specific settings.

Verify that the printer is working correctly by printing a test page.

You are updating the operating system on your iPad. Your iPad is connected to your computer, and you are using iTunes to install the update.

Which of the following BEST describes what would happen to your iPad if you disconnect it before the operating system update is complete?

The operating system could become corrupted.

Which of the following is a specialized controller that you can use to remotely manage all your network devices?

SDN

You work in the computer repair department of a large retail outlet. A customer comes in with a workstation that randomly shuts down. You suspect that the power supply is failing.

What should you do first to troubleshoot the issue?

Use a known good spare to swap with the existing power supply.

Which of the following should you NEVER do on an SSD drive?

Defragment the drive.

You have purchased an LED monitor and connected it to the HDMI port on your computer using an HDMI cable. You configure the screen resolution to 1280 x 1024 with 32-bit color. The geometry of the images displayed on the screen appear to be distorted.

What should you do to correct the problem?

Set the display resolution to the native resolution of the monitor.

Which of the following battery types has the greatest need to be completely drained before being recharged?

Nickel Cadmium (NiCad)

Which of the following BEST describes a community cloud implementation?

Designed to be shared by several organizations.

You are a technician for a company. Additional funds have been allocated to the sales department, and they have asked you to upgrade the memory modules in each employee's notebook computer.

Which of the following are the MOST common methods to access these memory slots?

Remove the keyboard.

Open a panel on the bottom of the notebook.

While creating a virtual machine, you decide to set it up to use an external network.

What else do you need to do to enable the external network configuration?

Select a NIC using the virtual switch manager.

You want to create a virtual machine environment in which you can develop and test new software.

Which virtualization benefit BEST describes the testing environment that you want to implement?

Sandbox

Which of the following are technologies that Bluetooth utilizes?

2.4 GHz radio wireless

Personal area network (PAN)

What are the two mesh protocols that are used most often with IoT devices? (Select two.)

Zigbee

Z-Wave

What does the term cloud mean when referring to cloud computing?

It is a metaphor for the internet based on the basic cloud drawing used to represent a telephone network.

Parallel Port

Steve, a computer technician, receives a help desk ticket for a computer that will not start. When Steve powered the computer on, there was one long and two short beeps.

Which of the following programs is reporting this error condition?

POST

You've used your Windows workstation to map a drive to a shared folder on a Windows server. Which protocol was used to access the share?

SFTP

While you are answering help desk calls, a field customer calls and complains that he cannot print to a workgroup laser printer.

Which of the following should be the first question you ask?

Have you ever successfully printed to that printer?

You've just purchased an Ethernet adapter for your Android tablet.

Which of the following USB connector types would you MOST likely use to plug in to the adapter?

USB-C connector

Which term refers to a software implementation of a computer system that executes programs like a physical machine?

Virtual Machine

• A - SC connector

• B - ST connector

• C - LC connector

• D - MT-RJ connector

Which of the following are considered computer hardware?

Motherboard

Printer

Which of the following allows a computer to communicate with a printer?

Print Driver

While sorting through a box of cables in your storage room, you find one that matches the configuration shown in the image.

Which of the following BEST describes the type of cable configuration and the purpose for which it would be used?

Crossover cable configuration used to connect computers directly to one another for networking.

A user reports that her system is running slowly when saving files. You determine that you'll need to upgrade her hard disk. You identify the components that are required and schedule the repair for later that afternoon.

Which of the following steps have you forgotten in your troubleshooting process?

Perform a backup.

Which of the following terms describes a PC card that you can insert and remove without rebooting the computer?

Hot Swappable

You have an existing system that has a single DDR3 memory module installed. You would like to add more memory to the three remaining empty memory slots.

Which of the following steps should you take to make sure that you get the right memory for the system?

Check the motherboard documentation to find which modules are supported.

Purchase additional modules that are the same as what is currently installed.

While setting up a home office, a technician disables the DHCP service on the office router, but does not want to rely on link-local addressing.

Which of the following IP addressing methods should they use?

Static

When you try to boot your computer, it hangs after POST. When you access the UEFI setup program, you see that the date is several years behind, and the time is set to 12:01 a.m.

Which of the following is the MOST likely cause of this behavior?

The motherboard battery has failed.

What are the advantages of DDR4 over DDR3, assuming the same operating frequency?

DDR4 uses less power than DDR3.

DDR4 doubles the data transfer rate of DDR3.

Which network type uses light pulses to transmit data?

Fiber Optic

You are putting together a system for a graphic artist and need to make sure that you find a display that meets their needs. The display needs to have very good color reproduction quality and viewing angles. The display also needs to have proper cooling and be power-efficient.

Which of the following display types will MOST likely meet these needs?

LCD display with IPS panel.

An employee is trying to log in to Windows on their notebook computer. The employee enters the correct password for the user account, but the system won't let the employee authenticate, claiming the wrong password has been entered.

Which of the following is MOST likely causing this problem?

The employee has turned Num Lock on, causing the keyboard to register numbers instead of letters.

Match each disk status on the left with the corresponding description on the right. Each status may be used once, more than once, or not at all.

The Healthy or Online status indicates that the disk is turned on, it can be accessed, and the volume on the disk is valid and has no errors.

The Initializing process is displayed while a disk is being converted from a basic disk to a dynamic disk. After the conversion, the status for the volume changes to Healthy.

The Unavailable status indicates that errors have occurred on physical or dynamic disks.

The Missing status shows when a dynamic disk has been removed or turned off.

After installing a new SSD drive on your Windows 11 system, you determine that the TRIM functionality has not been automatically enabled on the drive by the Windows operating system. You need to manually turn on TRIM from a Command Prompt. The drive's volume has been assigned a drive letter of E:.

Which of the following commands MUST you use to enable this feature?

fsutil behavior set DisableDeleteNotify 0

You are a software developer, and you're creating a multimedia streaming application. Data will be streamed from your streaming server to clients over IP networks.

Which transport protocol should your application use to send data between the clients and the server?

UDP

Which of the following is the purpose of cache memory?

Allows a processor to access data more quickly.

You recently upgraded a client's older workstation to Windows 11. The client has called to complain that the interface is very slow. For example, after clicking on the Start button, the Start menu slowly appears on the screen.

Which of the following will MOST likely fix this problem without requiring a hardware upgrade?

Set the visual effects for best performance.

You are currently learning about networking devices and have just learned about MAC addresses. You look up your device's MAC address, and it comes back as 00-B0-D0-06-BC-AC.

Which portion of this MAC address can tell you who the manufacturer is?

00-B0-D0

Which of the following is an advantage of connecting a printer to a network?

Multiple users can print to the same printer.

As a network engineer, you have been creating patch (straight-through) cables for a network switch. You have plugged in all the cables and are testing data transmission through the cables.

You notice that the data transmission is not functioning properly in some of the cables, and you are sure that one of the cables is interfering with the transmission at the near end.

What is this type of interference called?

Cross-talk interference

You are servicing a laptop that works properly when the power adapter is plugged in. Even though the battery icon shows that the battery is fully charged, when the laptop is unplugged, it immediately shuts down.

Which of the following actions MOST likely resolves the issue?

Replace the laptop battery.

Which of the following actions would allow you to access the internet on your laptop via a cellular network?

Install a cellular USB adapter in a open port on your laptop.

Which of the following tools is specifically designed to test the DC voltage on a hard disk drive power connector?

Power Supply Tester

Which key advantages do containers have over virtual machines?

Smaller size and may only require a few megabytes

Faster start times for containerized applications

Which of the following is true of modern LCD monitors in regards to backlighting?

LEDs are used to backlight the screen.

• DDR (double data rate synchronous dynamic RAM) DIMM has a single notch, slightly off-center. DDR memory has 184 pins.

• DDR2 DIMM has a notch that is slightly closer to the middle and has more pins (240) than DDR memory.

• DDR3 DIMM has a single notch that is more off-center than the notch for DDR or DDR-2. Like DDR2, DDR3 has 240 pins.

• DDR4 DIMM has a single notch, slightly right of center. DDR4 has 288 pins.

• 144-pin SO-DIMM is used in notebook computers. The notch is slightly off-center.

• 200-pin SO-DIMM has a notch that is farther off-center than 144-pin SO-DIMM. These modules are used by DDR2 and DDR3 memory.

• UniDIMM has a notch that is positioned similar to 200-pin SO-DIMM. UniDIMM supports both DDR3 and DDR4 memory.

Which of the following is the FIRST thing you should do if your laptop battery appears swollen or feels hot?

Shut off the laptop and unplug it.

You have recently purchased a 3D resin printer. After printing out a few 3D objects, the printer begins producing grinding noises.

What is the MOST likely cause of the issue?

Loose printer screws

You've just purchased 10 new notebook computers for your users. You are concerned that

users will leave the notebooks on for long periods of time, which could result in display burn￾in.

What should you do to prevent this from happening?

Configure a screen saver on each computer

As an IT technician, you are aware of data privacy issues when sharing or using public devices.

Which of the following is the BEST advice for making it difficult for anyone to gain access to

your information?

Enable login notifications or approvals for your services and accounts.

While presenting a high-definition video through a projector, you find that the audio is not in

sync with the video.

What is the MOST likely cause of this issue?

The audio file is being processed faster than the video file.

A group of workers attend a team-building retreat at a remote cabin. They can place calls on

their mobile smartphones, but the cabin has no wired phone, television, or wired internet

connectivity. The workers need to access an internet web page through their laptop

computers.

Which of the following internet connection types might be available to the workers?

Cellular

Which of the following accurately describe a Type 2 hypervisor?

Can run on any OS.

Acts as a software application.

You have an existing computer running Windows 11. You want to configure a RAID 1 array in

the computer. You install two new SATA drives and then use the RAID controller integrated in

the motherboard to define a RAID 1 array using both drives.

When you boot the computer, Windows does not show the logical RAID drive. What should

you do?

Install the driver for the RAID controller.

Which of the following connects the internal laptop keyboard to the laptop's system board?

Ribbon Cable

When booting your workstation, you hear a series of audible beeps, and the system locks up.

What is the FIRST step you should take when troubleshooting this issue?

Check the motherboard documentation for POST errors.

You are setting up a small network in your office with one Windows server and 50 Windows workstations. You want to spend as little time as possible configuring the workstations with IP addressing information. What is the BEST solution to reduce the time required to configure the workstations with IP addressing information?

Install and configure the DHCP service on your server.

Which of the following BEST describes the print server?

The process that manages the flow of print requests for how and when

documents are sent to the printer.