Computer Hardware MCQs with Answers and Explanations

Question #421

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The lifespan of an LCD monitor is typically:

A. Unlimited

B. 1,000 hours

C. 30,000 to 60,000 hours

D. 100 hours

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Correct Answer: Option C

Explanation:
Backlight determines it.

This question belongs to: Computer Computer Hardware

Question #422

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Which input device is used in medical imaging?

A. Standard keyboard

B. Specialized scanners like MRI but for computer, digitizers

C. Mouse

D. Printer

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Correct Answer: Option B

Explanation:
Digitizing medical data.

This question belongs to: Computer Computer Hardware

Question #423

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PCIe 5.0 offers:

A. Higher bandwidth than previous generations

B. Lower speed

C. Same as PCIe 1.0

D. For audio only

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Correct Answer: Option A

Explanation:
Future-proofing.

This question belongs to: Computer Computer Hardware

Question #424

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What is the main use of a webcam in hardware context?

A. Storage

B. Video input for conferencing

C. Processing

D. Output device

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Correct Answer: Option B

Explanation:
Essential for remote communication.

This question belongs to: Computer Computer Hardware

Question #425

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The term 'multiplier lock' refers to:

A. Printer lock

B. Memory lock

C. Limiting overclocking on some CPUs

D. Display lock

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Correct Answer: Option C

Explanation:
For stability.

This question belongs to: Computer Computer Hardware

Question #426

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A flatbed scanner's lid is important for:

A. Paper feed

B. Increasing speed

C. Blocking ambient light during scan

D. Color enhancement

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Correct Answer: Option C

Explanation:
Better image quality.

This question belongs to: Computer Computer Hardware

Question #427

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What does ' heterogeneous computing' involve?

A. CPU and GPU working together

B. Memory only

C. Storage

D. Single processor

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Correct Answer: Option A

Explanation:
Modern systems.

This question belongs to: Computer Computer Hardware

Question #428

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The best paper for inkjet photo printing is:

A. Newspaper

B. Plain A4

C. Cardboard

D. Glossy or matte photo paper

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Correct Answer: Option D

Explanation:
Optimal ink absorption.

This question belongs to: Computer Computer Hardware

Question #429

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A hardware security module (HSM) is for:

A. Cryptographic key management

B. Graphics

C. Printing secure docs

D. Scanning

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Correct Answer: Option A

Explanation:
High security.

This question belongs to: Computer Computer Hardware

Question #430

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What causes input lag in monitors?

A. High refresh

B. Brightness

C. Processing delay in display

D. Low resolution

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Correct Answer: Option C

Explanation:
Important for gaming.

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