Top 20 Computer Hardware Multiple Choice Questions and Answers 2025 (Hardware MCQ Set-1)

Computer Hardware MCQs (Set of 20)

1. Which component is considered the 'brain' of the computer?

A. RAM
B. CPU ✔
C. Hard Disk
D. Motherboard

2. Which device is used to store long-term data?

A. RAM
B. Hard Drive ✔
C. Cache Memory
D. Register

3. What does RAM stand for?

A. Read Access Memory
B. Random Access Memory ✔
C. Run Access Memory
D. Rapid Action Memory

4. Which component connects all hardware devices?

A. CPU
B. RAM
C. Motherboard ✔
D. PSU

5. Which port is used for connecting a keyboard or mouse traditionally?

A. USB
B. PS/2 ✔
C. VGA
D. HDMI

6. What type of device is a printer?

A. Input Device
B. Output Device ✔
C. Storage Device
D. Processing Device

7. Which component supplies power to the computer?

A. CPU
B. UPS
C. Power Supply Unit (PSU) ✔
D. Motherboard

8. Which memory is permanent and non-volatile?

A. Cache
B. ROM ✔
C. RAM
D. Register

9. What does SSD stand for?

A. Solid State Data
B. Solid State Drive ✔
C. Storage System Drive
D. Standard Storage Device

10. Which connector is used for monitors?

A. PS/2
B. VGA ✔
C. RJ45
D. SATA

11. What is the full form of BIOS?

A. Basic Internal Output System
B. Basic Input Output System ✔
C. Binary Input Output System
D. Basic Interface Operating System

12. Which device converts digital signals to analog?

A. Router
B. Modem ✔
C. Switch
D. Hub

13. Which slot is used for installing graphic cards?

A. PCI
B. PCI Express (PCIe) ✔
C. SATA
D. IDE

14. Which part stores the computer's startup instructions?

A. RAM
B. ROM ✔
C. Hard Disk
D. CPU

15. What is the speed unit of a processor?

A. Mbps
B. GB
C. GHz ✔
D. Kbps

16. Which device is used for backup power?

A. PSU
B. UPS ✔
C. Modem
D. RAM

17. Which connector is used for storage devices?

A. RJ45
B. PS/2
C. SATA ✔
D. HDMI

18. What does GPU stand for?

A. General Processing Unit
B. Graphics Processing Unit ✔
C. General Purpose Unit
D. Graphics Performance Unit

19. Which component temporarily stores data being processed?

A. Hard Disk
B. ROM
C. RAM ✔
D. SSD

20. Which is an example of an input device?

A. Monitor
B. Keyboard ✔
C. Printer
D. Speaker