Power gating technique turns off: MCQ with Answer and Explanation

Question

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Power gating technique turns off:

A. Unused circuit blocks to save leakage power

B. All cores simultaneously

C. ALU permanently

D. Cache only

Answer: Option A

Solution (By JKSSB Mock Tests)

It improves energy efficiency.

This question belongs to: Computer CPU (Central Processing Unit)

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Question #1

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The Memory Buffer Register (MBR) holds:

A. Next program address

B. Address only

C. Data being transferred to or from memory

D. Control signals

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Correct Answer: Option C

Explanation:
It acts as a buffer for data movement between CPU and memory.

This question belongs to: Computer CPU (Central Processing Unit)

Question #2

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The write-through cache policy:

A. Updates both cache and memory simultaneously

B. Reads data

C. Never updates memory

D. Updates cache only

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Correct Answer: Option A

Explanation:
Ensures consistency but may increase traffic.

This question belongs to: Computer CPU (Central Processing Unit)

Question #3

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The store queue handles:

A. Fetches

B. Decodes

C. Pending memory writes

D. ALU results

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Correct Answer: Option C

Explanation:
For memory ordering.

This question belongs to: Computer CPU (Central Processing Unit)

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