NEWEST VERSION 2026 COMPTIA A+ (IT BASICS) TEST
BANK TEST QUESTIONS AND CORRECT ANSWERS.
1. Which component is considered the “brain” of a computer system?
A. RAM
B. Motherboard
C. CPU
D. Power Supply
Correct Answer: C
Explanation: The CPU processes instructions and performs calculations. RAM stores
temporary data, the motherboard connects components, and the power supply
provides electricity.
2. What type of storage is non-volatile?
A. RAM
B. Cache
C. ROM
D. Register
Correct Answer: C
Explanation: ROM retains data even when power is off. RAM, cache, and registers
are volatile and lose data when power is removed.
3. Which device is used to connect a computer to a network?
A. GPU
B. NIC
C. PSU
D. BIOS
Correct Answer: B
Explanation: A Network Interface Card (NIC) enables network connectivity. GPU
handles graphics, PSU provides power, BIOS initializes hardware.
4. What does RAM primarily do?
A. Stores permanent files
B. Executes BIOS
C. Provides temporary storage for active processes
D. Controls peripherals
Correct Answer: C
Explanation: RAM temporarily stores data for active applications. It is not used for
permanent storage or hardware control.
,5. Which file system is commonly used by Windows operating systems?
A. EXT4
B. NTFS
C. HFS+
D. FAT12
Correct Answer: B
Explanation: NTFS is the standard Windows file system. EXT4 is for Linux, HFS+ for
macOS, FAT12 is outdated.
6. What is the main function of an operating system?
A. Compile code
B. Manage hardware and software resources
C. Design applications
D. Provide internet access
Correct Answer: B
Explanation: The OS manages system resources and provides an interface for users
and applications.
7. Which port is commonly used for USB devices?
A. HDMI
B. RJ-45
C. USB Type-A
D. VGA
Correct Answer: C
Explanation: USB Type-A ports are standard for connecting peripherals. HDMI is for
video, RJ-45 for networking, VGA for display.
8. What does BIOS stand for?
A. Basic Input Output System
B. Binary Integrated Operating System
C. Basic Internal Operating Setup
D. Boot Input Output Service
Correct Answer: A
Explanation: BIOS initializes hardware during boot. The other options are incorrect
expansions.
9. Which component converts AC to DC power in a computer?
A. CPU
B. PSU
C. RAM
D. SSD
Correct Answer: B
, Explanation: The Power Supply Unit converts AC to DC. Other components rely on
this power.
10. Which type of device is a keyboard?
A. Output
B. Input
C. Storage
D. Processing
Correct Answer: B
Explanation: A keyboard inputs data into the system. It does not output, store, or
process data.
11. What is malware?
A. Hardware failure
B. Software update
C. Malicious software
D. Network cable
Correct Answer: C
Explanation: Malware refers to harmful software designed to damage or exploit
systems.
12. Which storage device has no moving parts?
A. HDD
B. SSD
C. Optical Drive
D. Tape Drive
Correct Answer: B
Explanation: SSDs use flash memory with no moving parts, unlike HDDs and optical
drives.
13. What does IP stand for in networking?
A. Internet Protocol
B. Internal Process
C. Integrated Port
D. Input Program
Correct Answer: A
Explanation: Internet Protocol is used for addressing devices on a network.
14. Which device connects multiple computers in a LAN?
A. Router
, B. Switch
C. Modem
D. Firewall
Correct Answer: B
Explanation: A switch connects devices within a LAN. Routers connect networks.
15. What is the purpose of a firewall?
A. Store files
B. Speed up CPU
C. Block unauthorized access
D. Manage memory
Correct Answer: C
Explanation: Firewalls monitor and control incoming/outgoing network traffic.
16. Which unit measures CPU speed?
A. Bytes
B. Hertz
C. Volts
D. Watts
Correct Answer: B
Explanation: CPU speed is measured in Hertz (Hz), indicating cycles per second.
17. What type of software is Microsoft Word?
A. System software
B. Utility software
C. Application software
D. Firmware
Correct Answer: C
Explanation: Microsoft Word is an application used by end-users.
18. Which cable is used for wired networking?
A. HDMI
B. Ethernet
C. VGA
D. SATA
Correct Answer: B
Explanation: Ethernet cables connect devices in wired networks.
19. What is phishing?
A. Hardware damage
BANK TEST QUESTIONS AND CORRECT ANSWERS.
1. Which component is considered the “brain” of a computer system?
A. RAM
B. Motherboard
C. CPU
D. Power Supply
Correct Answer: C
Explanation: The CPU processes instructions and performs calculations. RAM stores
temporary data, the motherboard connects components, and the power supply
provides electricity.
2. What type of storage is non-volatile?
A. RAM
B. Cache
C. ROM
D. Register
Correct Answer: C
Explanation: ROM retains data even when power is off. RAM, cache, and registers
are volatile and lose data when power is removed.
3. Which device is used to connect a computer to a network?
A. GPU
B. NIC
C. PSU
D. BIOS
Correct Answer: B
Explanation: A Network Interface Card (NIC) enables network connectivity. GPU
handles graphics, PSU provides power, BIOS initializes hardware.
4. What does RAM primarily do?
A. Stores permanent files
B. Executes BIOS
C. Provides temporary storage for active processes
D. Controls peripherals
Correct Answer: C
Explanation: RAM temporarily stores data for active applications. It is not used for
permanent storage or hardware control.
,5. Which file system is commonly used by Windows operating systems?
A. EXT4
B. NTFS
C. HFS+
D. FAT12
Correct Answer: B
Explanation: NTFS is the standard Windows file system. EXT4 is for Linux, HFS+ for
macOS, FAT12 is outdated.
6. What is the main function of an operating system?
A. Compile code
B. Manage hardware and software resources
C. Design applications
D. Provide internet access
Correct Answer: B
Explanation: The OS manages system resources and provides an interface for users
and applications.
7. Which port is commonly used for USB devices?
A. HDMI
B. RJ-45
C. USB Type-A
D. VGA
Correct Answer: C
Explanation: USB Type-A ports are standard for connecting peripherals. HDMI is for
video, RJ-45 for networking, VGA for display.
8. What does BIOS stand for?
A. Basic Input Output System
B. Binary Integrated Operating System
C. Basic Internal Operating Setup
D. Boot Input Output Service
Correct Answer: A
Explanation: BIOS initializes hardware during boot. The other options are incorrect
expansions.
9. Which component converts AC to DC power in a computer?
A. CPU
B. PSU
C. RAM
D. SSD
Correct Answer: B
, Explanation: The Power Supply Unit converts AC to DC. Other components rely on
this power.
10. Which type of device is a keyboard?
A. Output
B. Input
C. Storage
D. Processing
Correct Answer: B
Explanation: A keyboard inputs data into the system. It does not output, store, or
process data.
11. What is malware?
A. Hardware failure
B. Software update
C. Malicious software
D. Network cable
Correct Answer: C
Explanation: Malware refers to harmful software designed to damage or exploit
systems.
12. Which storage device has no moving parts?
A. HDD
B. SSD
C. Optical Drive
D. Tape Drive
Correct Answer: B
Explanation: SSDs use flash memory with no moving parts, unlike HDDs and optical
drives.
13. What does IP stand for in networking?
A. Internet Protocol
B. Internal Process
C. Integrated Port
D. Input Program
Correct Answer: A
Explanation: Internet Protocol is used for addressing devices on a network.
14. Which device connects multiple computers in a LAN?
A. Router
, B. Switch
C. Modem
D. Firewall
Correct Answer: B
Explanation: A switch connects devices within a LAN. Routers connect networks.
15. What is the purpose of a firewall?
A. Store files
B. Speed up CPU
C. Block unauthorized access
D. Manage memory
Correct Answer: C
Explanation: Firewalls monitor and control incoming/outgoing network traffic.
16. Which unit measures CPU speed?
A. Bytes
B. Hertz
C. Volts
D. Watts
Correct Answer: B
Explanation: CPU speed is measured in Hertz (Hz), indicating cycles per second.
17. What type of software is Microsoft Word?
A. System software
B. Utility software
C. Application software
D. Firmware
Correct Answer: C
Explanation: Microsoft Word is an application used by end-users.
18. Which cable is used for wired networking?
A. HDMI
B. Ethernet
C. VGA
D. SATA
Correct Answer: B
Explanation: Ethernet cables connect devices in wired networks.
19. What is phishing?
A. Hardware damage
