The prefetcher in CPU: MCQ with Answer and Explanation

Question

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The prefetcher in CPU:

A. Manages power

B. Anticipates and loads data into cache

C. Performs ALU ops

D. Decodes instructions

Answer: Option B

Solution (By JKSSB Mock Tests)

Reduces latency by proactive fetching.

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

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Question #1

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The combination of ALU and CU forms the:

A. Input Unit

B. Central Processing Unit

C. Memory Unit

D. Output Unit

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Correct Answer: Option B

Explanation:
ALU and CU, along with registers, constitute the CPU.

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

Question #2

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Which is a benefit of multi-chip module (MCM) design?

A. Reduced core communication

B. Simpler cooling

C. Higher single-thread latency

D. Better binning and cost efficiency

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Correct Answer: Option D

Explanation:
Used in many modern high-core CPUs.

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

Question #3

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Dynamic voltage scaling is used to:

A. Reduce cores

B. Increase heat

C. Optimize power consumption

D. Fix clock speed

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Correct Answer: Option C

Explanation:
Adjusts voltage and frequency based on workload.

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

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