Below is a fresh set of 20 unique MCQs related to core computer hardware concepts. Each question includes four options, and the correct answer is highlighted in green with a green check mark for easy learning.

This set of Computer Hardware MCQs is designed for job tests, IT exams, competitive exams, and computer operator assessments. All questions are unique and include clear correct answers highlighted in green.

1. Which type of RAM is commonly used in modern laptops?
A. DDR2
B. DDR3
C. DDR4 SODIMM ✔
D. SRAM

2. Which hardware device allows wireless network connectivity?
A. Switch
B. Wi-Fi Adapter ✔
C. Hub
D. Modem Router

3. What is the primary purpose of a heat pipe in CPU cooling?
A. Store heat
B. Transfer heat efficiently ✔
C. Reduce electricity
D. Increase airflow

4. Which interface is used by SSDs for the fastest performance?
A. SATA 1
B. SATA 2
C. SATA 3
D. PCIe NVMe ✔

5. Which type of display uses organic compounds to emit light?
A. LCD
B. OLED ✔
C. LED
D. CRT

6. Which device measures system temperature?
A. Fan
B. Thermal Sensor ✔
C. PSU
D. NIC

7. What does DPI refer to in printers?
A. Data Processing Input
B. Dots Per Inch ✔
C. Dual Pixel Integration
D. Digital Print Index

8. Which component acts as the brain of the GPU?
A. Heat Sink
B. Graphics Processor ✔
C. VRAM
D. Shader Fan

9. Which storage device is most suitable for archiving data long-term?
A. RAM
B. SSD
C. Magnetic Tape ✔
D. Cache Memory

10. What technology is used in barcode scanners?
A. X-ray
B. Laser ✔
C. Plasma
D. UV Light

11. Which port is commonly found on older monitors?
A. VGA ✔
B. USB-C
C. RJ-11
D. FireWire

12. Which device stores the operating system permanently?
A. RAM
B. Hard Disk / SSD ✔
C. CPU
D. Cache Memory

13. What type of hardware is a stylus?
A. Output Device
B. Input Device ✔
C. Storage Device
D. Memory Device

14. Which type of RAM is fastest?
A. DRAM
B. SRAM ✔
C. DDR2
D. DDR5

15. RAID technology is used for:
A. Graphics enhancement
B. Data protection and performance ✔
C. Video editing
D. CPU cooling

16. Which hardware component produces sound?
A. Monitor
B. Keyboard
C. Speaker ✔
D. Scanner

17. Which connector powers the CPU on the motherboard?
A. SATA Power
B. Molex
C. 4-pin / 8-pin EPS ✔
D. PCIe Power

18. Which memory is used in graphics cards?
A. DDR4
B. DRAM
C. GDDR ✔
D. SRAM

19. Which component enables multiple monitors to be connected?
A. PSU
B. Graphics Card ✔
C. Sound Card
D. RAM

20. What is the function of a BIOS battery?
A. Increase CPU speed
B. Maintain BIOS settings ✔
C. Cool the CPU
D. Store operating system

These Computer Hardware MCQs help you prepare for competitive exams, IT interviews, computer operator tests, and hardware certifications. Each question includes four options with the correct answer highlighted in green for quick learning.

1. Which component stores the basic system configuration?
A. RAM
B. HDD
C. CMOS ✔
D. GPU

2. Which type of connector is used for network cables?
A. HDMI
B. RJ-45 ✔
C. USB
D. PS/2

3. What is the main function of the motherboard chipset?
A. Data storage
B. Display output
C. Manage communication between components ✔
D. Power regulation

4. Which device is used to capture images?
A. Printer
B. Scanner ✔
C. Webcam
D. Keyboard

5. Which port is commonly used for audio output?
A. VGA
B. 3.5mm Jack ✔
C. USB-C
D. HDMI

6. The part of the CPU that stores small, temporary data is:
A. Cache
B. Register ✔
C. HDD
D. SSD

7. Which slot is used for installing graphics cards?
A. PCI
B. PCIe ✔
C. ISA
D. AGP

8. The main purpose of a NIC is:
A. Sound control
B. Network connectivity ✔
C. Power management
D. Storage control

9. Which device converts AC to DC?
A. UPS
B. Power Supply Unit ✔
C. Inverter
D. Modem

10. Which memory is the fastest?
A. ROM
B. SSD
C. Cache ✔
D. HDD

11. A touchscreen is an example of:
A. Output device
B. Input and Output device ✔
C. Storage device
D. Memory device

12. Which device displays hard copy output?
A. Monitor
B. Printer ✔
C. Scanner
D. Joystick

13. The main circuit board in a computer is called:
A. RAM board
B. Motherboard ✔
C. CPU board
D. Processor board

14. Which component is responsible for cooling inside the cabinet?
A. PSU
B. Fan ✔
C. GPU
D. Modem

15. LED monitors use:
A. Gas plasma
B. Light-emitting diodes ✔
C. Cathode tubes
D. Fluorescent lamps

16. Which connector is used for high-speed external storage?
A. RJ-11
B. PS/2
C. USB 3.0 ✔
D. VGA

17. The part of the CPU that interprets instructions is:
A. ALU
B. Control Unit ✔
C. Memory Unit
D. Buffer

18. Which hardware component is used for permanent data storage?
A. RAM
B. Hard Disk ✔
C. Cache
D. Register

19. The width of the data bus determines:
A. CPU speed
B. Amount of data transferred at once ✔
C. GPU performance
D. Signal quality

20. Which interface is best for connecting modern monitors?
A. PS/2
B. Serial Port
C. DisplayPort ✔
D. Parallel Port

This Hardware MCQ Set 8 includes a new collection of high-quality computer hardware multiple-choice questions designed for exams, interviews, and IT skills assessment. Each question features four options with correctly highlighted answers for quick revision and effective learning.

1. The speed of a hard disk is measured in:
A. Kbps
B. RPM ✔
C. MHz
D. MBps

2. Which device converts digital signals into analog for transmission over telephone lines?
A. Router
B. Repeater
C. Modem ✔
D. Switch

3. Which component temporarily holds instructions during processing?
A. ROM
B. RAM ✔
C. HDD
D. SSD

4. Which port is commonly used for connecting printers?
A. USB ✔
B. HDMI
C. VGA
D. PS/2

5. A GPU is mainly used for:
A. Sound processing
B. Graphics processing ✔
C. Network management
D. Power regulation

6. What type of memory retains data even when power is off?
A. ROM ✔
B. RAM
C. Cache
D. Register

7. Which connector is used for high-definition digital video output?
A. VGA
B. DVI
C. HDMI ✔
D. Serial Port

8. Which device stabilizes voltage for a computer system?
A. PSU
B. UPS ✔
C. Surge protector
D. Inverter

9. Which of the following is a solid-state storage device?
A. CD-ROM
B. Floppy Disk
C. SSD ✔
D. Magnetic Tape

10. Which CPU component performs mathematical operations?
A. ALU ✔
B. CU
C. MU
D. BUS

11. The BIOS is stored in:
A. RAM
B. HDD
C. ROM ✔
D. GPU

12. Which interface is fastest for connecting storage devices?
A. SATA 2
B. NVMe ✔
C. USB 2.0
D. Thunderbolt 1

13. A heat sink is used to:
A. Increase voltage
B. Dissipate heat ✔
C. Reduce power
D. Store energy

14. Which bus is responsible for CPU–memory communication?
A. PCI
B. System Bus ✔
C. USB
D. SCSI

15. Which type of printer uses toner?
A. Inkjet
B. Laser Printer ✔
C. Dot Matrix
D. Thermal

16. POST is performed by:
A. CPU
B. BIOS ✔
C. HDD
D. OS

17. Which component supplies power to all other components?
A. UPS
B. Power Supply Unit ✔
C. Transformer
D. Inverter

18. DDR stands for:
A. Dual Drive RAM
B. Double Data Rate ✔
C. Direct Data Read
D. Dynamic Dual RAM

19. The part of the CPU that controls execution of instructions is:
A. ALU
B. Control Unit ✔
C. Register
D. Buffer

20. The speed of USB 3.0 is up to:
A. 100 Mbps
B. 1 Gbps
C. 5 Gbps ✔
D. 10 Gbps

1. Which device converts digital data into a visual display?

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

2. Which storage device has the highest data access speed?
A. HDD
B. DVD
C. NVMe SSD ✔
D. USB Flash Drive

3. Which component inside a computer generates significant heat?
A. Keyboard
B. CPU
C. GPU ✔
D. NIC Card

4. Which type of port is used to connect an older mouse?
A. HDMI
B. PS/2 ✔
C. USB-C
D. Ethernet

5. What is the primary purpose of thermal paste?
A. To protect motherboard
B. To increase CPU speed
C. To improve heat transfer between CPU and heatsink ✔
D. To cool hard disk

6. Which device provides both input and output functions?
A. Printer
B. Touchscreen ✔
C. Mouse
D. Speaker

7. Which cable carries both video and audio signals?
A. VGA
B. DVI
C. HDMI ✔
D. Serial Cable

8. What is the function of a chipset on the motherboard?
A. Increase storage
B. Manage communication between CPU and other components ✔
C. Control speakers
D. Boost network speed

9. Which display technology consumes the least power?
A. CRT
B. Plasma
C. LED ✔
D. LCD (Old type)

10. Which device is mainly used to protect PC from lightning strikes?
A. Router
B. Surge Protector ✔
C. Hub
D. Webcam

11. Which component handles audio processing?
A. CPU
B. Sound Card ✔
C. NIC
D. RAM

12. Which part holds the BIOS firmware?
A. RAM
B. SSD
C. ROM Chip ✔
D. GPU

13. Which device reads information from a credit or ID card?
A. Scanner
B. Printer
C. Magnetic Stripe Reader ✔
D. Barcode Gun

14. What does the refresh rate of a monitor measure?
A. Brightness
B. Resolution
C. Number of screen redraws per second ✔
D. Color depth

15. Which connector is used for high-quality audio devices?
A. VGA
B. HDMI
C. Optical Audio Port ✔
D. PS/2

16. Which hardware communicates directly with the CPU for data transfer?
A. Printer
B. Keyboard
C. Main Memory (RAM) ✔
D. Projector

17. What is the speed of a traditional HDD measured in?
A. GHz
B. MB/s
C. RPM ✔
D. Bits per second

18. Which device is used to translate typed text into speech?
A. Webcam
B. Text-to-Speech Device ✔
C. Printer
D. Microphone

19. What is the main purpose of a computer fan?
A. Increase voltage
B. Output sound
C. Control system temperature ✔
D. Boot the system

20. Which interface provides the fastest external device connectivity?
A. USB 2.0
B. FireWire
C. USB 3.1 / USB 3.2 ✔
D. Parallel Port

This Hardware MCQ Set 6 includes a new collection of high-quality computer hardware multiple-choice questions designed for exams, interviews, and IT skills assessment. Each question features four options with correctly highlighted answers for quick revision and effective learning.

1. Which CPU component performs arithmetic and logic operations?
A. CU
B. Register
C. ALU ✔
D. Cache

2. Which device is used to store backup data for long-term?
A. SSD
B. External Hard Drive ✔
C. RAM
D. CPU

3. What does the term DPI refer to?
A. Display Pixel Input
B. Digital Performance Index
C. Dots Per Inch ✔
D. Device Position Interface

4. Which port is mainly used for video output?
A. USB
B. PS/2
C. HDMI ✔
D. RJ-45

5. Which hardware manages the instructions sent to the CPU?
A. RAM
B. SSD
C. Control Unit ✔
D. Graphics Card

6. Which device helps prevent data loss during sudden power cuts?
A. RAM
B. UPS ✔
C. CPU
D. Joystick

7. Which memory type is used to improve CPU processing time?
A. HDD
B. Cache Memory ✔
C. ROM
D. SSD

8. Which connector is used to attach internal Hard Disks and SSDs?
A. HDMI
B. PS/2
C. SATA ✔
D. FireWire

9. Which device converts sound into digital signals?
A. Speaker
B. Headphone
C. Microphone ✔
D. Amplifier

10. Which hardware component is responsible for rendering graphics?
A. SSD
B. Sound Card
C. GPU ✔
D. NIC

11. The capacity of RAM is measured in:
A. GHz
B. RPM
C. GB ✔
D. DB

12. Which device enables video conferencing?
A. Printer
B. Webcam ✔
C. Scanner
D. Plotter

13. Which term is used for the startup process of a computer?
A. Upload
B. Shutdown
C. Booting ✔
D. Scanning

14. What type of storage is a CD-ROM?
A. Magnetic
B. Optical ✔
C. Solid State
D. Mechanical

15. Which port is used to connect a telephone line?
A. USB
B. RJ-11 ✔
C. RJ-45
D. PS/2

16. Which component distributes power to all motherboard parts?
A. CPU
B. Power Supply Unit ✔
C. Fan
D. Heatsink

17. Which display technology provides better color and contrast?
A. CRT
B. LCD
C. LED ✔
D. Plasma

18. Which bus connects the CPU to RAM?
A. USB Bus
B. PCI Bus
C. System Bus ✔
D. Serial Bus

19. What does CMOS stand for?
A. Computer Memory Operating System
B. Central Machine Operating Source
C. Complementary Metal Oxide Semiconductor ✔
D. Control Machine Output System

20. Which device is used to secure network access?
A. Printer
B. Speaker
C. Firewall Device ✔
D. UPS

1. Which unit stores the instructions needed for starting the computer?
A. RAM
B. Cache
C. ROM ✔
D. GPU

2. What is the primary function of the NIC (Network Interface Card)?
A. Increase RAM speed
B. Enhance graphics
C. Enable network communication ✔
D. Control CPU temperature

3. Which device is used to digitize handwritten documents?
A. Printer
B. Scanner ✔
C. Projector
D. Modem

4. Which type of memory is faster than RAM?
A. Hard Disk
B. SSD
C. Cache Memory ✔
D. Flash Drive

5. Which component temporarily holds data processed by the ALU?
A. ROM
B. Hard Disk
C. Registers ✔
D. USB

6. Which device increases the overall sound level of a computer?
A. CPU
B. Speaker ✔
C. NIC Card
D. Motherboard

7. Which part stores the system date and time?
A. BIOS
B. Hard Disk
C. CMOS ✔
D. PSU

8. Which connector is used especially for audio devices?
A. USB
B. VGA
C. 3.5mm Audio Jack ✔
D. PS/2

9. What does SMPS stand for?
A. Standard Mechanical Power Supply
B. Switched Mode Power Supply ✔
C. Serial Monitor Power System
D. System Mode Power Source

10. Which interface is commonly used for solid-state drives?
A. Parallel Port
B. SATA ✔
C. PS/2
D. VGA

11. Which device controls the pointer on the screen?
A. Keyboard
B. Mouse ✔
C. Scanner
D. Microphone

12. Which type of memory loses data when power is turned off?
A. ROM
B. Hard Disk
C. RAM ✔
D. SSD

13. Which hardware component provides wireless internet connectivity?
A. USB Hub
B. Wi-Fi Adapter ✔
C. DVD Drive
D. Graphics Card

14. Which port is mostly used for printers?
A. VGA
B. HDMI
C. USB ✔
D. RJ-11

15. Which device is used to project images on a large screen?
A. Scanner
B. Projector ✔
C. Plotter
D. Barcode Reader

16. Which measurement unit expresses monitor resolution?
A. RPM
B. DB
C. Pixels ✔
D. GHz

17. Which type of drive uses a laser to read data?
A. SSD
B. Hard Disk
C. Optical Drive ✔
D. Tape Drive

18. Which device is used for secure authentication?
A. Printer
B. Fingerprint Scanner ✔
C. Speaker
D. Microphone

19. What is the small battery on the motherboard called?
A. GPU Cell
B. Power Brick
C. CMOS Battery ✔
D. BIOS Battery

20. Which slot is designed for modern Wi-Fi cards?
A. ISA
B. AGP
C. PCIe ✔
D. LPT

This Hardware MCQ Set 4 includes a new collection of high-quality computer hardware multiple-choice questions designed for exams, interviews, and IT skills assessment. Each question features four options with correctly highlighted answers for quick revision and effective learning.

1. Which part acts as the brain of the computer?
A. GPU
B. RAM
C. CPU ✔
D. SSD

2. Which connector is used for modern keyboards?
A. PS/2
B. Serial Port
C. USB ✔
D. Parallel Port

3. Which device is used to read barcodes?
A. Joystick
B. Barcode Scanner ✔
C. Web Camera
D. MICR

4. Which memory stores data permanently?
A. RAM
B. Cache
C. ROM ✔
D. Registers

5. What is the function of the heat sink?
A. Store Data
B. Boost Graphics
C. Cool the CPU ✔
D. Connect Devices

6. Which port is used for high-speed external storage?
A. PS/2
B. VGA
C. USB 3.0 ✔
D. Audio Jack

7. Which device is used to take backup of data?
A. Printer
B. Plotter
C. External Hard Drive ✔
D. Scanner

8. Which expansion slot is used for sound cards?
A. AGP
B. PCIe x16
C. PCI ✔
D. USB Slot

9. Which of the following is NOT an input device?
A. Touchpad
B. Mouse
C. Projector ✔
D. Keyboard

10. A typical laptop uses which type of RAM?
A. DDR2
B. SO-DIMM ✔
C. SDRAM
D. SRAM

11. Which protocol is used for wireless keyboard and mouse?
A. HDMI
B. VGA
C. Bluetooth ✔
D. FTP

12. Which component holds the boot loader?
A. GPU
B. BIOS ✔
C. RAM
D. Hard Drive

13. Which part of the computer generates sound?
A. NIC Card
B. CPU
C. Sound Card ✔
D. Modem

14. Which device is used to protect the computer from voltage fluctuations?
A. Hard Disk
B. Router
C. Stabilizer ✔
D. Scanner

15. Which connector is used for wired internet?
A. USB
B. HDMI
C. RJ-45 ✔
D. RJ-11

16. A mouse that detects motion with light uses which technology?
A. Mechanical
B. Ball Sensor
C. Optical ✔
D. Infrared Sensor

17. Which device converts AC to DC?
A. Adapter
B. UPS
C. SMPS ✔
D. Cooling Fan

18. Which hardware is essential for starting a computer?
A. Printer
B. Speakers
C. Power Supply Unit ✔
D. Scanner

19. Which type of cable is commonly used for monitors?
A. PS/2
B. Serial
C. HDMI ✔
D. RJ-11

20. Where is the operating system primarily loaded during startup?
A. GPU
B. SSD only
C. RAM ✔
D. Cache

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

Computer Hardware MCQs (Set of 20) – Set 2

Below are 20 important hardware multiple choice questions with answers. Useful for competitive exams, IT tests, and interview preparation.

1. Which component is responsible for cooling the CPU?

A. Thermal Paste
B. Heat Sink ✔
C. PSU
D. Chassis Fan

2. Which device is used to input handwritten text?

A. Joystick
B. Scanner
C. Graphics Tablet ✔
D. Stylus Pen

3. What type of memory is cache memory?

A. Secondary Memory
B. Non-Volatile Memory
C. High-speed volatile memory ✔
D. Optical Memory

4. Which connector is commonly used for network cables?

A. HDMI
B. PS/2
C. RJ45 ✔
D. AV Port

5. Which device converts AC to DC for computer use?

A. UPS
B. SMPS ✔
C. CPU
D. RAM

6. Which memory is faster?

A. RAM
B. Cache Memory ✔
C. Hard Disk
D. SSD

7. Which expansion slot is used for sound cards?

A. AGP
B. PCI ✔
C. SATA
D. IDE

8. Which device reads barcodes?

A. OCR
B. Barcode Scanner ✔
C. Magnetic Reader
D. Light Pen

9. What is the main function of the CMOS battery?

A. Power CPU
B. Supply power to RAM
C. Maintain system date and BIOS settings ✔
D. Boost graphics performance

10. Which device is used to display computer output?

A. Keyboard
B. Mouse
C. Monitor ✔
D. Scanner

11. Which storage device has no moving parts?

A. HDD
B. SSD ✔
C. DVD
D. Tape Drive

12. Which bus is used to connect external devices?

A. AGP
B. USB ✔
C. FSB
D. PS/2

13. Which device provides wireless connectivity?

A. Hub
B. Wi-Fi Adapter ✔
C. Keyboard
D. Switch

14. Which storage device is optical?

A. SSD
B. CD/DVD ✔
C. Flash Drive
D. Hard Disk

15. Which device is used to project screen output?

A. Monitor
B. Scanner
C. Projector ✔
D. Speaker

16. The full form of IRQ is:

A. Internal Request Query
B. Interrupt Request ✔
C. Interface Request
D. Integrated Response Queue

17. Which device is used to read MICR codes?

A. Scanner
B. MICR Reader ✔
C. OMR Device
D. Barcode Reader

18. What is the primary function of the CPU?

A. Storage
B. Processing ✔
C. Input
D. Printing

19. Which port is used for audio output?

A. VGA
B. 3.5 mm Audio Jack ✔
C. USB
D. HDMI

20. Which hardware component acts as the main circuit board?

A. RAM
B. CPU
C. Motherboard ✔
D. PSU

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

This new set includes 20 unique hardware-related MCQs designed for competitive exams and IT assessments. Correct answers are highlighted in green with a green check mark.

This collection includes fresh multiple-choice questions on computer basics, hardware, and technology fundamentals. Correct answers are highlighted in green with a green check mark.

This set provides brand-new computer hardware MCQs helpful for competitive exams, IT interviews, and technical practice. Correct answers are highlighted in green with a green check mark for quick identification.

This set offers brand-new multiple-choice questions on fundamental and advanced computer hardware concepts. All correct answers are marked in green with a green check mark for easy understanding and revision.

This set features newly created computer hardware multiple-choice questions designed for students, job seekers, and IT learners. Correct answers are highlighted in green along with a green check mark for easy identification.

Computer Hardware MCQs Set 18 | Important Hardware Questions with Answers

This set contains fresh and unique computer hardware multiple-choice questions for exam preparation. Correct answers are highlighted in green with a green check mark.

Q1. Which component manages the basic startup operations of a computer?
A. GPU
B. RAM
C. BIOS ✔
D. NIC

Q2. The speed of a hard disk is measured in:
A. GHz
B. Mbps
C. RPM ✔
D. DPI

Q3. Which device converts AC power to low-voltage DC power?
A. UPS
B. SMPS ✔
C. Inverter
D. Transformer

Q4. A PCI slot is commonly used for installing:
A. CPU
B. RAM
C. Expansion Cards ✔
D. SSD

Q5. Which type of memory is directly accessed by the CPU?
A. Hard Disk
B. USB Drive
C. RAM ✔
D. Optical Disc

Q6. A device that reads data from optical disks is called:
A. Hard Disk
B. RAM
C. DVD Drive ✔
D. Modem

Q7. The main function of a Network Interface Card is to:
A. Process Graphics
B. Increase CPU Speed
C. Connect to a Network ✔
D. Backup Data

Q8. Which connector type is used for analog monitors?
A. HDMI
B. DisplayPort
C. VGA ✔
D. USB-C

Q9. What hardware stores the date and time settings in a computer?
A. Hard Disk
B. RAM
C. CMOS Battery ✔
D. PSU

Q10. A storage device with no moving parts is:
A. HDD
B. SSD ✔
C. Floppy Disk
D. DVD

Q11. Which hardware component determines the display resolution?
A. PSU
B. CPU
C. GPU ✔
D. RAM

Q12. USB stands for:
A. Unified Serial Bus
B. Universal Serial Bus ✔
C. Unique System Bus
D. Ultra Speed Bus

Q13. Which device acts as both input and output?
A. Mouse
B. Keyboard
C. Touch Screen ✔
D. Projector

Q14. The physical layout of a motherboard is called its:
A. Interface
B. Framework
C. Form Factor ✔
D. Module

Q15. DDR stands for:
A. Double Data Reduce
B. Double Data Rate ✔
C. Dual Disk Rate
D. Data Drive Ratio

Q16. Which hardware provides the primary display output to a monitor?
A. NIC
B. SMPS
C. Graphics Card ✔
D. ROM

Q17. What type of connector is PS/2?
A. Audio Connector
B. Keyboard/Mouse Connector ✔
C. Video Connector
D. Power Connector

Q18. The refresh rate of a monitor is measured in:
A. DPI
B. GB
C. Hertz ✔
D. Lumens

Q19. Which part of the CPU performs calculations?
A. CU
B. ALU ✔
C. Register
D. Cache

Q20. A joystick is mainly used for:
A. Printing
B. Typing
C. Gaming Control ✔
D. Data Backup

Q1. Which component reduces the heat generated by the CPU?
A. PSU
B. RAM
C. Heat Sink ✔️
D. Modem

Q2. What type of storage device uses spinning magnetic disks?
A. SSD
B. HDD ✔️
C. Flash Drive
D. Memory Card

Q3. Which port is mainly used for connecting projectors and older monitors?
A. HDMI
B. DisplayPort
C. VGA ✔️
D. USB-C

Q4. The main advantage of SSDs over HDDs is:
A. More moving parts
B. Faster data access ✔️
C. Heavier weight
D. More noise

Q5. Which device converts digital data into audio signals?
A. GPU
B. Sound Card ✔️
C. NIC
D. PSU

Q6. The primary role of the motherboard is to:
A. Store data permanently
B. Increase CPU speed
C. Connect all hardware components ✔️
D. Backup system files

Q7. Which memory type is used during the booting process?
A. RAM
B. ROM ✔️
C. Cache
D. Flash Drive

Q8. A touchpad on a laptop is an example of:
A. Output device
B. Input device ✔️
C. Processing device
D. Storage device

Q9. Which component is responsible for controlling data flow between the CPU and other parts?
A. Hard Disk
B. PSU
C. Motherboard Chipset ✔️
D. CMOS Battery

Q10. Which cable is used for transferring audio and video signals digitally?
A. VGA
B. RCA
C. HDMI ✔️
D. PS/2

Q11. The unit used to measure CPU clock speed is:
A. MB
B. GB
C. GHz ✔️
D. RPM

Q12. Which component helps prevent data loss during brief power outages?
A. SMPS
B. UPS ✔️
C. Modem
D. Monitor

Q13. The BIOS is responsible for:
A. Running applications
B. Initial hardware testing ✔️
C. Storing user files
D. Controlling graphics

Q14. The standard size for desktop RAM modules is:
A. SO-DIMM
B. DIMM ✔️
C. Micro-DIMM
D. Nano-DIMM

Q15. Which device detects light to capture images?
A. Printer
B. Scanner ✔️
C. CPU
D. PSU

Q16. The physical structure that houses computer components is called:
A. Motherboard
B. RAM
C. Cabinet ✔️
D. GPU

Q17. Which interface is most commonly used for connecting printers today?
A. VGA
B. PS/2
C. USB ✔️
D. Serial Port

Q18. A GPU is mainly responsible for:
A. Power Control
B. Sound Processing
C. Graphics Rendering ✔️
D. Data Backup

Q19. Which memory is considered the fastest?
A. RAM
B. Cache ✔️
C. ROM
D. Flash

Q20. A barcode reader is an example of:
A. Storage Device
B. Output Device
C. Input Device ✔️
D. Processing Device