CompTIA A+ Practice Test Questions and Answers

CompTIA A+ is your gateway into the exciting world of Information Technology (IT), where you'll learn to troubleshoot, repair, and manage tech like a pro. To help you prepare, this blog brings together the most popular CompTIA A+ Practice Test Questions designed to sharpen your skills and boost your confidence. In case, you are just starting out or aiming to validate your skills, this is your chance to level up and launch your tech career with confidence.

Table of Contents

1) List of important CompTIA A+ practice questions and answers

2) How can CompTIA A+ Practice Questions Help You Pass the Exam?

a) What type of social engineering involves an unauthorised person gaining access to a restricted area by following someone with legitimate entry?

b) Which peripherals are commonly used by companies to take inventory and update product price tags efficiently? (Select two)

c) Which Windows app in Windows 10 brings together multiple utilities into a single unified tool?

d) What accurately describes the relationship between BIOS and hardware?

e) Which security measure uses a person's physical characteristics for authentication?

f) Which cable type is recommended for connecting a cable modem to a SOHO router?

g) Among the following root keys, which contains the data for non-user-specific configurations in a system?

h) Which tool allows you to modify the programs that start when Windows 10 boots up?

i) What issues can arise from device drivers and failing hardware in macOS and Linux Operating Systems?

j) Which of the following is an example of a hybrid topology?

3) Conclusion

List of important CompTIA A+ practice questions and answers

CompTIA A+ exam preparation requires you to take up the CompTIA A+ practice tests to clearly understand the actual CompTIA A+ exam format. Let’s go through a list of the most important CompTIA A+ practice questions and answers:

What type of Social Engineering involves an unauthorised person gaining access to a restricted area by following someone with legitimate entry?

a) Shoulder surfing

b) Hacking

c) Spying

d) Tailgating

Answer: D. Tailgating

Which peripherals are commonly used by companies to take inventory and update product price tags efficiently? (Select two)

a)  Magnetic reader

b) NFC device

c) Label printer

d) Barcode scanner

e) Flatbed scanner

f) KVM switch

Answer: D. Barcode scanner and A. Magnetic reader

These devices quickly read product barcodes, allowing companies to track stock levels, update pricing and manage real-time product data.

Which Windows app in Windows 10 brings together multiple utilities into a single unified tool?

a) Control Center

b) Settings

c) Command Center

d) Control

Answer: A. Control Center

It replaces much of the functionality previously handled by the traditional Control Panel and streamlines the system configuration process for modern users.

When selecting a power supply for a desktop computer to be used at trade shows worldwide, the technician should primarily consider which of the following system parameters?

a) Efficiency rating

b) Input voltage

c) Number of SATA connectors

d) 12V rail amperage

Answer: B. Input voltage

What could be the problem if Silas, who has an AMD-based motherboard which consists of two sticks of DDR3 RAM installed in two of the three RAM slots, notices that CPU-Z reports the system is running in single-channel memory mode? (Choose the best answer)

a) His motherboard only supports single-channel memory

b) His motherboard only supports dual-channel memory with DDR2 RAM, not DDR3

c) He needs to install a third RAM stick to enable dual-channel memory

d) He needs to move any one of the installed sticks and shift to a different slot to activate dual-channel memory

Answer: D. He needs to move one of the installed sticks to a different slot to activate dual-channel memory.

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What accurately describes the relationship between BIOS and hardware?

a) All hardware needs BIOS.

b) All hardware that attaches to the motherboard via ribbon cables needs BIOS

c) All hardware built into the motherboard needs BIOS

d) Some hardware devices need BIOS.

Answer: D. Some hardware devices need BIOS

Hardware devices tied directly to system startup and initial configuration need BIOS, while others operate independently once the OS has loaded.

Which security measure uses a person's physical characteristics for authentication?

a) Biometric lock

b) Access Card

c) Pincode lock

d) Physical Token

Answer: A. Biometric look

Biometric locks are particularly valuable in environments where secure and tamper-proof access is crucial, such as mobile devices, data centres and high-security facilities.

Which cable type is recommended for connecting a cable modem to a SOHO router?

a) Thunderbolt

b) Coaxial

c) USB

d) Ethernet

Answer: D. Ethernet

Ethernet cables, typically using RJ-45 connectors, are ideal because they support high-speed data transfer, stable connections, and low latency.

Among the following root keys, which contains the data for non-user-specific configurations in a system?

a) HKEY_LOCAL_MACHINE

b) HKEY_USERS

c) HKEY_CURRENT_USER

d) HKEY_CLASSES_ROOT

Answer: A. HKEY_LOCAL_MACHINE

This root key in the Windows Registry stores non-user-specific configuration data that applies to the entire system, regardless of which user is logged in.

Which tool allows you to modify the programs that start when Windows 10 boots up?

a) Msstartup

b) Msinfo32

c) Msconfig

d)Task Manager

Answer: C. Msconfig

The Msconfig tool (Also called the System Configuration utility) allows users to manage aspects of the system startup process, including modifying which programs and services launch when the OS boots.

What issues can arise from device drivers and failing hardware in macOS and Linux Operating Systems?

a) Spinning windmill

b) Blue Screen of Death (BSoD)

c) Kernel panic

d)  Terminal emulation

Answer: C. Kernel panic

The Msconfig tool (Also called the System Configuration utility) allows users to manage aspects of the system startup process, including modifying which programs and services launch when the OS boots.

What issues can arise from device drivers and failing hardware in macOS and Linux Operating Systems?

a) Spinning windmill

b) Blue Screen of Death (BSoD)

c) Kernel panic

d) Terminal emulation

Answer:C. Kernel panic

On macOS, a kernel panic typically displays a multilingual error message advising the user to restart the computer. On the other hand, Linux might display a more technical screen with error codes and logs.

Which of the following is an example of a hybrid topology?

a) Ring

b) Bus

c) Star bus

d) Star

Answer: C. A star bus topology

It is a hybrid topology much like the one used with Ethernet networks.

What is the difference between a virtual machine (VM) and an emulator?

a) A VM translates commands between a host machine and a different platform, while an emulator creates an environment depending on the host machine without any conversion.

b) An emulator translates commands between a host machine and a different platform, while a VM generates an environment based on the host machine without any conversion.

c) An emulator depends on a host OS, whereas a VM operates on bare-metal servers without needing an OS.

d) A VM relies on a host OS, whereas an emulator operates on bare-metal servers without requiring an OS.

Answer: b. While an emulator converts from one platform to another, a virtual machine mirrors the host machine.

Which of the following display types will you commonly find on a portable PC today?

a) Cathode Ray Tube (CRT)

b) Liquid Crystal Display (LCD)

c) Organic Light Emitting Diode (OLED)

d) Plasma

Answer: b. Liquid Crustal Display (LCD).

LCD's lightweight design, energy efficiency, affordability and decent image quality makes them ideal for mobile computing.

What information do you need to connect an Android-based tablet to an IMAP account?

a) Username and password

b) POP3 server DNS name

c) Exchange server name, username and password

d) Username, password, sending and receiving server addresses

Answer: d. You'll need a username and password and the sending and receiving server addresses to connect an Android-based tablet to an IMAP account.

Which mobile operating system requires a third-party software firewall?

a) Android

b) macOS

c) Windows Mobile

d) iOS

Answer: a. Only Android needs a third-party software firewall.

While Android offers certain security features like app permissions and Google Play Protect, a third-party firewall gives users more control over incoming and outgoing traffic.

How can CompTIA A+ Practice Questions Help You Pass the Exam?

CompTIA A+ practice tests are highly beneficial for your exam preparation for the following reasons:

1) Practice tests mirror the real CompTIA A+ exam, so you can get used to how it’s set up, the kinds of questions asked, and the time limit.

2) Doing practice tests with a timer helps you get better at finishing the exam on time.

3) Going over the questions you got wrong or found hard shows you what topics you need to study more.

4) Focusing on tricky areas helps you understand the subject better and feel more prepared overall.

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Conclusion

The right CompTIA A+ Practice Test Questions don’t just test you; they train you to think, solve, and act like an IT pro. Each question brings you closer to real-world confidence and exam success. Keep practicing, stay sharp, and let every answer move you one step closer to your tech career goals.

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