Which is a disadvantage of very deep pipelines? MCQ with Answer and Explanation

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Which is a disadvantage of very deep pipelines?

A. Reduced power

B. Lower clock speeds

C. Higher branch misprediction penalty

D. Simpler hazard detection

Answer: Option C

Solution (By JKSSB Mock Tests)

More stages to flush.

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

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Question #1

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The micro-operation (micro-op) is:

A. User command

B. Memory block

C. High level code

D. Low-level operation in complex instructions

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Correct Answer: Option D

Explanation:
CISC instructions are broken into simpler micro-ops.

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

Question #2

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Which unit decodes machine instructions?

A. Memory

B. ALU

C. I/O Controller

D. CU

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Correct Answer: Option D

Explanation:
The Control Unit handles instruction decoding.

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

Question #3

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Which is not a CPU performance metric?

A. Temperature in Celsius

B. Power consumption

C. Benchmark scores

D. IPC, clock speed, cores

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Correct Answer: Option A

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

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

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