Which input device is essential for accessibility? MCQ with Answer and Explanation

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Which input device is essential for accessibility?

A. Laser printers

B. Standard only

C. High-end monitors

D. Special keyboards, mice, or voice recognition

Answer: Option D

Solution (By JKSSB Mock Tests)

For users with disabilities.

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Question #1

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What is the main advantage of liquid cooling over air cooling?

A. No maintenance

B. Lower cost

C. Easier installation

D. Better heat dissipation for high-end CPUs

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Correct Answer: Option D

Explanation:
For overclocking and quiet operation.

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Question #2

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What causes dead pixels in monitors?

A. Manufacturing defect in LCD pixels

B. Low brightness

C. Wrong cable

D. High usage

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Correct Answer: Option A

Explanation:
Non-functional sub-pixels.

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Question #3

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The contrast ratio in monitors indicates:

A. Resolution

B. Difference between brightest and darkest

C. Color count

D. Refresh rate

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Correct Answer: Option B

Explanation:
Higher is better for depth.

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