Computer Hardware MCQs with Answers and Explanations

Question #421

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The lifespan of an LCD monitor is typically:

A. 30,000 to 60,000 hours

B. 1,000 hours

C. Unlimited

D. 100 hours

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Correct Answer: Option A

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. Printer

B. Standard keyboard

C. Specialized scanners like MRI but for computer, digitizers

D. Mouse

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Correct Answer: Option C

Explanation:
Digitizing medical data.

This question belongs to: Computer Computer Hardware

Question #423

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PCIe 5.0 offers:

A. Lower speed

B. For audio only

C. Higher bandwidth than previous generations

D. Same as PCIe 1.0

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Correct Answer: Option C

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. Output device

D. Processing

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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. Display lock

B. Memory lock

C. Limiting overclocking on some CPUs

D. Printer 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. Blocking ambient light during scan

C. Increasing speed

D. Color enhancement

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Correct Answer: Option B

Explanation:
Better image quality.

This question belongs to: Computer Computer Hardware

Question #427

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What does ' heterogeneous computing' involve?

A. Single processor

B. CPU and GPU working together

C. Memory only

D. Storage

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Correct Answer: Option B

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. Glossy or matte photo paper

C. Cardboard

D. Plain A4

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Correct Answer: Option B

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. Printing secure docs

B. Graphics

C. Cryptographic key management

D. Scanning

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Correct Answer: Option C

Explanation:
High security.

This question belongs to: Computer Computer Hardware

Question #430

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What causes input lag in monitors?

A. Brightness

B. High refresh

C. Processing delay in display

D. Low resolution

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Correct Answer: Option C

Explanation:
Important for gaming.

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