The main purpose of a wrist rest on keyboards is: MCQ with Answer and Explanation

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The main purpose of a wrist rest on keyboards is:

A. Increase speed

B. Ergonomics to prevent strain

C. RGB effect

D. Wireless charging

Answer: Option B

Solution (By JKSSB Mock Tests)

Comfort during long typing.

This question belongs to: Computer Computer Hardware

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What is the advantage of LED backlit monitors over CCFL?

A. Lower resolution

B. Thinner, energy efficient, better contrast

C. Slower response

D. Higher cost only

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Correct Answer: Option B

Explanation:
LEDs are modern standard.

This question belongs to: Computer Computer Hardware

Question #2

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What does 'MTBF' indicate for hardware?

A. Memory Transfer Buffer Format

B. Mean Time Between Failures, reliability measure

C. Maximum Thermal Buffer Factor

D. Monitor Test Benchmark Frequency

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Correct Answer: Option B

Explanation:
Indicates expected lifespan.

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Question #3

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Which scanner type is portable?

A. Film scanner

B. Handheld scanner

C. Flatbed only

D. Drum scanner

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Correct Answer: Option B

Explanation:
Handheld for on-the-go scanning.

This question belongs to: Computer Computer Hardware

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