Computer Hardware MCQs

Computer

Computer Hardware MCQs

Practice Computer Hardware MCQs with answers and detailed explanations covering input devices, output devices, scanners, printers, keyboards, monitors and computer hardware components frequently asked in competitive examinations.

430
Total Questions

Practice Questions

Page 2 of 22
Question #21
What does the term 'resolution' refer to in monitors?
A. Number of pixels on the screen
B. Refresh rate
C. Number of colors displayed
D. Brightness level
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
Resolution is the total number of pixels (e.g., 1920x1080).
This question belongs to: Computer Computer Hardware
Question #22
Which hardware component is responsible for executing arithmetic and logical operations?
A. ALU
B. MU
C. I/O Unit
D. CU
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
Arithmetic Logic Unit (ALU) performs calculations and logical operations.
This question belongs to: Computer Computer Hardware
Question #23
A device that produces sound output is called:
A. Scanner
B. Keyboard
C. Monitor
D. Speaker
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
Speakers are audio output devices.
This question belongs to: Computer Computer Hardware
Question #24
What is the main disadvantage of CRT monitors compared to LCD?
A. Lower resolution
B. Higher cost
C. Bulkier and heavier
D. Poor color accuracy
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
CRT monitors are bulkier due to the cathode ray tube technology.
This question belongs to: Computer Computer Hardware
Question #25
Which memory is used to store BIOS instructions?
A. ROM
B. HDD
C. RAM
D. Cache
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
ROM contains firmware like BIOS which is non-volatile.
This question belongs to: Computer Computer Hardware
Question #26
Optical Mouse uses which technology to detect movement?
A. LED and sensor
B. Mechanical ball
C. Ultrasonic waves
D. Magnetic field
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
Optical mice use light-emitting diodes and sensors.
This question belongs to: Computer Computer Hardware
Question #27
What is the function of a graphics card?
A. To store data
B. To connect networks
C. To process sound
D. To render images and videos
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
GPU (Graphics Processing Unit) handles visual rendering.
This question belongs to: Computer Computer Hardware
Question #28
Inkjet printers are best suited for:
A. Large format blueprints
B. Photo quality color printing
C. Fast text documents only
D. High-volume black and white printing
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Inkjet printers excel in high-quality color prints like photos.
This question belongs to: Computer Computer Hardware
Question #29
Which component connects the CPU to other parts of the motherboard?
A. Front Side Bus
B. North Bridge
C. All of the above
D. South Bridge
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
Bridges and buses facilitate communication on the motherboard.
This question belongs to: Computer Computer Hardware
Question #30
What type of device is a webcam?
A. Output device
B. Input device
C. Processing device
D. Storage device
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Webcam captures video input for the computer.
This question belongs to: Computer Computer Hardware
Question #31
EEPROM stands for:
A. External Extended Processing Memory
B. Electronically Enhanced Primary Output Memory
C. Extended Error Erasable Memory
D. Electrically Erasable Programmable Read Only Memory
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
EEPROM is a type of non-volatile memory that can be electrically erased and reprogrammed.
This question belongs to: Computer Computer Hardware
Question #32
Which printer is impact-based and noisy?
A. Laser Printer
B. Inkjet Printer
C. 3D Printer
D. Dot Matrix Printer
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
Dot matrix printers use impact technology creating noise.
This question belongs to: Computer Computer Hardware
Question #33
The speed of a processor is measured in:
A. DPI
B. Hertz (Hz)
C. Pixels
D. Bytes
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Clock speed of CPU is measured in GHz (gigahertz).
This question belongs to: Computer Computer Hardware
Question #34
What is the primary use of a digitizer tablet?
A. Projecting slides
B. Scanning documents
C. Drawing with a stylus for precise input
D. Printing high-resolution images
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
Digitizer or graphics tablet is used for precise digital drawing.
This question belongs to: Computer Computer Hardware
Question #35
Which of the following is a volatile storage device?
A. Flash Drive
B. RAM
C. SSD
D. CD-ROM
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
RAM loses data without power.
This question belongs to: Computer Computer Hardware
Question #36
OLED monitors are known for:
A. Excellent contrast and thin design
B. Low resolution
C. Being very expensive only for servers
D. High power consumption
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
OLED provides better blacks and thinner panels.
This question belongs to: Computer Computer Hardware
Question #37
What does MICR stand for in banking hardware?
A. Magnetic Input Card Reader
B. Modern Ink Color Reader
C. Magnetic Ink Character Recognition
D. Memory Input Character Reader
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
MICR is used in cheque processing.
This question belongs to: Computer Computer Hardware
Question #38
The brain of the computer is:
A. Monitor
B. Keyboard
C. CPU
D. Hard Disk
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
CPU processes all instructions.
This question belongs to: Computer Computer Hardware
Question #39
Which device uses toner for printing?
A. Inkjet
B. Laser
C. Thermal
D. Dot Matrix
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Laser printers use toner powder.
This question belongs to: Computer Computer Hardware
Question #40
What is the purpose of heat sink in computer hardware?
A. To increase processing speed
B. To dissipate heat from CPU
C. To connect peripherals
D. To store additional data
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Heat sinks prevent overheating of processors.
This question belongs to: Computer Computer Hardware

More Computer Topics

Computer Abbreviations MCQs
Computer Fundamentals MCQs
Computer Networking MCQs
Computer Software MCQs
CPU (Central Processing Unit) MCQs
Cyber Security MCQs
Database Management System (DBMS) MCQs
Internet and Web Technologies MCQs
Memory and Storage Devices MCQs
Microsoft Office MCQs
Operating Systems MCQs
Programming Languages MCQs
Today's Top Topics
Computer Networking 325 Microsoft Office 1199 CPU (Central Processing Unit) 327 Cyber Security 269 Memory and Storage Devices 438
Explore Subjects
Geography GK 6121 Current Affairs 575 History GK 3374 Accountancy and Statistics 3179 Maths 5575
Practice Mix
Select the most appropriate meaning of the idiom: 'Make a mountain out of a molehill'.
What does the 'GUI' acronym stand for in computer interface terminology?
A trader marks his goods 80% above cost price and gives a discount of 40%. Find his gain percent.
Which type of memory is used to store the firmware that boots the computer?
The average of 8 numbers is 30. If one number is 40, find the average of the remaining 7.