Top 20 Computer Hardware Multiple Choice Questions and Answers 2025 (Hardware MCQ Set-3)

Hardware MCQs – Set 3

Explore another fresh set of Computer Hardware multiple choice questions with answers. Ideal for competitive exams and IT job interviews.

1. Which component is responsible for temporary storage while the CPU processes data?
   A. SSD
   B. ROM
   C. RAM ✔
   D. Cache Disk
2. Which type of memory is non-volatile?
   A. ROM ✔
   B. RAM
   C. Cache
   D. Register
3. Which port is commonly used to connect a monitor?
   A. HDMI
   B. VGA
   C. DisplayPort
   D. All of these ✔
4. The speed of a CPU is measured in:
   A. Bits per second
   B. Megabytes
   C. Gigahertz ✔
   D. CPI
5. Which device converts digital signals to analog and vice versa?
   A. Router
   B. Switch
   C. Modem ✔
   D. Repeater
6. Which component supplies power to all computer parts?
   A. UPS
   B. Transformer
   C. SMPS ✔
   D. AVR
7. Which hardware is used to cool the CPU?
   A. Radiator
   B. Heat Sink ✔
   C. Compressor
   D. Condenser
8. Which type of storage has no moving parts?
   A. HDD
   B. DVD
   C. Tape Drive
   D. SSD ✔
9. What does BIOS stand for?
   A. Basic Input Operating System
   B. Binary Integrated Operating Setup
   C. Basic Internal Output System
   D. Basic Input Output System ✔
10. Which expansion slot is used for modern graphics cards?
    A. ISA
    B. AGP
    C. PCI Express ✔
    D. PCI
11. The device used to convert AC to DC inside a computer is:
    A. Inverter
    B. Converter
    C. Rectifier
    D. SMPS ✔
12. The motherboard component that connects CPU and memory is:
    A. GPU
    B. Sound Chip
    C. Chipset ✔
    D. Cooling Fan
13. Which device is used to store system configuration permanently?
    A. RAM
    B. Hard Disk
    C. CMOS ✔
    D. BIOS Chip
14. What is the full form of GPU?
    A. General Processing Unit
    B. Graphics Processing Unit ✔
    C. Graphical Power Utility
    D. Global Processing Unit
15. Which connector is used to power HDD and SSD?
    A. USB
    B. PS/2
    C. SATA Power ✔
    D. FireWire
16. Which device provides backup power during electricity failure?
    A. PSU
    B. Stabilizer
    C. UPS ✔
    D. Generator
17. What is the primary function of the motherboard?
    A. Data storage
    B. Printing
    C. Connecting and communicating between hardware components ✔
    D. Cooling CPU
18. Which of the following is an output device?
    A. Keyboard
    B. Mouse
    C. Monitor ✔
    D. Scanner
19. Which component stores the operating system?
    A. RAM
    B. Cache
    C. Hard Drive / SSD ✔
    D. GPU
20. Which bus is used for communication between CPU and main memory?
    A. Expansion Bus
    B. Local Bus
    C. System Bus ✔
    D. Serial Bus