The prefetcher in CPU: MCQ with Answer and Explanation

The prefetcher in CPU:

A. Performs ALU ops

B. Anticipates and loads data into cache

C. Manages power

D. Decodes instructions

Answer: Option B

Reduces latency by proactive fetching.

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

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Question #1 Report Error

The primary purpose of the Status Register is to:

A. Hold addresses

B. Indicate the outcome of operations like carry or zero flag

C. Control peripherals

D. Store program data

Correct Answer: Option B

Explanation:
It contains flags reflecting CPU state after arithmetic/logic ops.

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

Question #2 Report Error

In CPU, 'retirement' refers to:

A. Committing instruction results to architectural state

B. Decoding phase

C. Memory access

D. Fetching instructions

Correct Answer: Option A

Explanation:
It completes the instruction lifecycle.

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

Question #3 Report Error

Which instruction set supports 256-bit vectors?

A. x87

B. MMX

C. AVX2

D. SSE only

Correct Answer: Option C

Explanation:
Advanced Vector Extensions 2.

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