The instruction window in out-of-order CPUs refers to: MCQ with Answer and Explanation

The instruction window in out-of-order CPUs refers to:

A. Fetch buffer

B. Cache lines

C. Set of instructions being considered for execution

D. Retirement queue

Answer: Option C

For scheduling.

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

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Question #1 Report Error

Branch misprediction leads to:

A. Pipeline flush and performance loss

B. Better cache hit rate

C. Increased clock speed

D. Reduced power consumption

Correct Answer: Option A

Explanation:
Wrong prediction requires discarding speculative work.

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

Question #2 Report Error

CPUID instruction is used to:

A. Access hard disk

B. Identify processor features and capabilities

C. Perform addition

D. Control display

Correct Answer: Option B

Explanation:
Software uses it to detect supported features.

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

Question #3 Report Error

The predictor in branch prediction can be:

A. Static or dynamic

B. Software irrelevant

C. No predictor

D. Only hardware

Correct Answer: Option A

Explanation:
Dynamic uses history for accuracy.

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