Computer Hardware MCQs with Answers and Explanations

Question #101

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What is the use of a MIDI device?

A. Scanning text

B. Printing music sheets

C. Connecting musical instruments to computer

D. Video editing

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Correct Answer: Option C

Explanation:
MIDI for Musical Instrument Digital Interface.

This question belongs to: Computer Computer Hardware

Question #102

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Which memory loses content on power loss but is very fast?

A. SRAM

B. Magnetic tape

C. ROM

D. Flash

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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

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Duplex printing means:

A. Printing on both sides of paper

B. Color printing

C. High resolution printing

D. Fast draft mode

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Correct Answer: Option A

Explanation:
Automatic duplex saves paper.

This question belongs to: Computer Computer Hardware

Question #104

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The chipset that handles I/O is called:

A. Eastbridge

B. Southbridge

C. Westbridge

D. Northbridge

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Correct Answer: Option B

Explanation:
Southbridge manages slower peripherals.

This question belongs to: Computer Computer Hardware

Question #105

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What technology allows multiple monitors from one computer?

A. Daisy chaining or multi-port graphics card

B. Single HDMI only

C. USB extension

D. Bluetooth display

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Correct Answer: Option A

Explanation:
Graphics cards support multiple displays.

This question belongs to: Computer Computer Hardware

Question #106

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An example of wearable input device is:

A. Desktop monitor

B. Laser printer

C. External HDD

D. Smartwatch with sensors

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Correct Answer: Option D

Explanation:
Wearables like smartwatches input data via touch/sensors.

This question belongs to: Computer Computer Hardware

Question #107

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What is the standard voltage supplied by SMPS to motherboard?

A. 1.5V

B. 12V only

C. Multiple voltages like 3.3V, 5V, 12V

D. 220V AC

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Correct Answer: Option C

Explanation:
SMPS provides various DC voltages required by components.

This question belongs to: Computer Computer Hardware

Question #108

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Which scanner uses a linear array of sensors?

A. Film scanner

B. All of them

C. Drum scanner

D. Flatbed scanner

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Correct Answer: Option D

Explanation:
Flatbed uses CCD or CIS sensor arrays.

This question belongs to: Computer Computer Hardware

Question #109

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Hyper-threading technology is associated with:

A. Hard disks

B. AMD only

C. Graphics cards

D. Intel processors for better multitasking

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Correct Answer: Option D

Explanation:
It allows one core to act as two logical processors.

This question belongs to: Computer Computer Hardware

Question #110

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What is the purpose of anti-glare coating on monitors?

A. Increase brightness

B. Improve color accuracy only

C. Reduce reflections

D. Increase response time

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Correct Answer: Option C

Explanation:
Reduces eye strain from reflections.

This question belongs to: Computer Computer Hardware

Question #111

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Which of the following is a solid-state storage device?

A. Hard disk drive

B. Floppy disk

C. CD

D. Solid State Drive

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Correct Answer: Option D

Explanation:
SSD has no moving parts.

This question belongs to: Computer Computer Hardware

Question #112

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The QWERTY keyboard was originally designed to:

A. For one-handed use

B. For gaming

C. Speed up typing

D. Prevent mechanical jams in typewriters

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Correct Answer: Option D

Explanation:
To slow down typing to avoid key jams in old typewriters.

This question belongs to: Computer Computer Hardware

Question #113

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What does POST stand for in computer booting?

A. Primary Output System Test

B. Processor Operation Standard Test

C. Power On Self Test

D. Peripheral Output System Test

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Correct Answer: Option C

Explanation:
POST checks hardware during startup.

This question belongs to: Computer Computer Hardware

Question #114

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Ink cartridge is associated with:

A. Inkjet printers

B. Dot matrix

C. Laser printers

D. Plotters

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Correct Answer: Option A

Explanation:
Inkjet printers use liquid ink cartridges.

This question belongs to: Computer Computer Hardware

Question #115

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Which bus is used for data transfer inside CPU?

A. Internal bus or front side bus

B. Control bus

C. External bus

D. Address bus only

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Correct Answer: Option A

Explanation:
Internal buses connect CPU components.

This question belongs to: Computer Computer Hardware

Question #116

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Curved monitors are preferred for:

A. Low power consumption

B. Portability

C. Immersive gaming and wide viewing

D. Office text work

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Correct Answer: Option C

Explanation:
They provide better peripheral vision.

This question belongs to: Computer Computer Hardware

Question #117

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What is the use of a KVM switch?

A. Keyboard Video Mouse switch for multiple computers

B. Power backup

C. Network switching

D. Memory expansion

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Correct Answer: Option A

Explanation:
Allows sharing peripherals among computers.

This question belongs to: Computer Computer Hardware

Question #118

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Which memory is directly accessible by CPU?

A. Tape drive

B. Registers and cache

C. Secondary storage

D. Blu-ray disc

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Correct Answer: Option B

Explanation:
CPU accesses registers and cache fastest.

This question belongs to: Computer Computer Hardware

Question #119

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The standard paper size for most printers is:

A. Legal

B. A4

C. Letter only

D. A3

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Correct Answer: Option B

Explanation:
A4 is the international standard.

This question belongs to: Computer Computer Hardware

Question #120

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What does UEFI replace?

A. RAM

B. CPU

C. HDD

D. Traditional BIOS

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Correct Answer: Option D

Explanation:
UEFI is the modern firmware interface.

This question belongs to: Computer Computer Hardware

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