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.

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Total Questions

Practice Questions

Page 6 of 22
Question #101
What is the use of a MIDI device?
A. Connecting musical instruments to computer
B. Scanning text
C. Printing music sheets
D. Video editing
Discuss
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Correct Answer: Option A

Explanation:
MIDI for Musical Instrument Digital Interface.
This question belongs to: Computer Computer Hardware
Question #102
Which memory loses content on power loss but is very fast?
A. SRAM
B. Magnetic tape
C. Flash
D. ROM
Discuss
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Correct Answer: Option A

Explanation:
SRAM is faster volatile memory used in cache.
This question belongs to: Computer Computer Hardware
Question #103
Duplex printing means:
A. High resolution printing
B. Fast draft mode
C. Printing on both sides of paper
D. Color printing
Discuss
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Correct Answer: Option C

Explanation:
Automatic duplex saves paper.
This question belongs to: Computer Computer Hardware
Question #104
The chipset that handles I/O is called:
A. Eastbridge
B. Westbridge
C. Southbridge
D. Northbridge
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Correct Answer: Option C

Explanation:
Southbridge manages slower peripherals.
This question belongs to: Computer Computer Hardware
Question #105
What technology allows multiple monitors from one computer?
A. USB extension
B. Bluetooth display
C. Single HDMI only
D. Daisy chaining or multi-port graphics card
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Correct Answer: Option D

Explanation:
Graphics cards support multiple displays.
This question belongs to: Computer Computer Hardware
Question #106
An example of wearable input device is:
A. Desktop monitor
B. Laser printer
C. Smartwatch with sensors
D. External HDD
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Correct Answer: Option C

Explanation:
Wearables like smartwatches input data via touch/sensors.
This question belongs to: Computer Computer Hardware
Question #107
What is the standard voltage supplied by SMPS to motherboard?
A. 220V AC
B. Multiple voltages like 3.3V, 5V, 12V
C. 12V only
D. 1.5V
Discuss
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Correct Answer: Option B

Explanation:
SMPS provides various DC voltages required by components.
This question belongs to: Computer Computer Hardware
Question #108
Which scanner uses a linear array of sensors?
A. Flatbed scanner
B. All of them
C. Drum scanner
D. Film scanner
Discuss
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Correct Answer: Option A

Explanation:
Flatbed uses CCD or CIS sensor arrays.
This question belongs to: Computer Computer Hardware
Question #109
Hyper-threading technology is associated with:
A. Intel processors for better multitasking
B. Hard disks
C. AMD only
D. Graphics cards
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Correct Answer: Option A

Explanation:
It allows one core to act as two logical processors.
This question belongs to: Computer Computer Hardware
Question #110
What is the purpose of anti-glare coating on monitors?
A. Reduce reflections
B. Improve color accuracy only
C. Increase brightness
D. Increase response time
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Correct Answer: Option A

Explanation:
Reduces eye strain from reflections.
This question belongs to: Computer Computer Hardware
Question #111
Which of the following is a solid-state storage device?
A. Floppy disk
B. Hard disk drive
C. Solid State Drive
D. CD
Discuss
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Correct Answer: Option C

Explanation:
SSD has no moving parts.
This question belongs to: Computer Computer Hardware
Question #112
The QWERTY keyboard was originally designed to:
A. Prevent mechanical jams in typewriters
B. For gaming
C. Speed up typing
D. For one-handed use
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Correct Answer: Option A

Explanation:
To slow down typing to avoid key jams in old typewriters.
This question belongs to: Computer Computer Hardware
Question #113
What does POST stand for in computer booting?
A. Primary Output System Test
B. Peripheral Output System Test
C. Processor Operation Standard Test
D. Power On Self Test
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Correct Answer: Option D

Explanation:
POST checks hardware during startup.
This question belongs to: Computer Computer Hardware
Question #114
Ink cartridge is associated with:
A. Dot matrix
B. Inkjet printers
C. Plotters
D. Laser printers
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Correct Answer: Option B

Explanation:
Inkjet printers use liquid ink cartridges.
This question belongs to: Computer Computer Hardware
Question #115
Which bus is used for data transfer inside CPU?
A. Control bus
B. Internal bus or front side bus
C. Address bus only
D. External bus
Discuss
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Correct Answer: Option B

Explanation:
Internal buses connect CPU components.
This question belongs to: Computer Computer Hardware
Question #116
Curved monitors are preferred for:
A. Immersive gaming and wide viewing
B. Office text work
C. Low power consumption
D. Portability
Discuss
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Correct Answer: Option A

Explanation:
They provide better peripheral vision.
This question belongs to: Computer Computer Hardware
Question #117
What is the use of a KVM switch?
A. Keyboard Video Mouse switch for multiple computers
B. Network switching
C. Power backup
D. Memory expansion
Discuss
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Correct Answer: Option A

Explanation:
Allows sharing peripherals among computers.
This question belongs to: Computer Computer Hardware
Question #118
Which memory is directly accessible by CPU?
A. Secondary storage
B. Tape drive
C. Registers and cache
D. Blu-ray disc
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Correct Answer: Option C

Explanation:
CPU accesses registers and cache fastest.
This question belongs to: Computer Computer Hardware
Question #119
The standard paper size for most printers is:
A. A3
B. Legal
C. Letter only
D. A4
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Correct Answer: Option D

Explanation:
A4 is the international standard.
This question belongs to: Computer Computer Hardware
Question #120
What does UEFI replace?
A. HDD
B. Traditional BIOS
C. CPU
D. RAM
Discuss
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Correct Answer: Option B

Explanation:
UEFI is the modern firmware interface.
This question belongs to: Computer Computer Hardware

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