The control bus carries: MCQ with Answer and Explanation

Question

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The control bus carries:

A. Data values

B. ALU operands

C. Memory addresses

D. Signals like read/write, interrupt

Answer: Option D

Solution (By JKSSB Mock Tests)

Commands and status.

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

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Question #1

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Which is not a CPU performance metric?

A. Benchmark scores

B. Power consumption

C. IPC, clock speed, cores

D. Temperature in Celsius

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Correct Answer: Option D

Explanation:
Temperature is a constraint, not direct performance measure.

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

Question #2

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Branch misprediction leads to:

A. Pipeline flush and performance loss

B. Better cache hit rate

C. Reduced power consumption

D. Increased clock speed

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Correct Answer: Option A

Explanation:
Wrong prediction requires discarding speculative work.

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

Question #3

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In CPU, 'retirement' refers to:

A. Committing instruction results to architectural state

B. Decoding phase

C. Memory access

D. Fetching instructions

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Correct Answer: Option A

Explanation:
It completes the instruction lifecycle.

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

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