Modern wireless mice use which frequency band? MCQ with Answer and Explanation

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Modern wireless mice use which frequency band?

A. 2.4 GHz or Bluetooth

B. 5 GHz only

C. Infrared

D. AM radio

Answer: Option A

Solution (By JKSSB Mock Tests)

Low latency options available.

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What is the purpose of a UPS?

A. User Processing Software

B. Ultra Power Saver

C. Universal Printer System

D. Uninterruptible Power Supply for backup

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Correct Answer: Option D

Explanation:
Provides temporary power during outages.

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Question #2

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The cache hit ratio indicates:

A. Memory failure

B. Efficiency of cache usage

C. Printer efficiency

D. Display quality

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Correct Answer: Option B

Explanation:
Higher is better.

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Question #3

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DDR5 RAM offers improvements in:

A. Speed and efficiency over DDR4

B. Higher latency

C. Lower capacity

D. Compatibility with old systems

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Correct Answer: Option A

Explanation:
Latest standard in 2026.

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