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

Question

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

A. Cache lines

B. Fetch buffer

C. Set of instructions being considered for execution

D. Retirement queue

Answer: Option C

Solution (By JKSSB Mock Tests)

For scheduling.

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

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Question #1

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The exception handling in CPU involves:

A. Precise interrupts and state saving

B. ALU reset

C. Ignoring errors

D. Cache flush only

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Correct Answer: Option A

Explanation:
For errors and interrupts.

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

Question #2

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Which technique reduces branch misprediction penalty?

A. Fewer registers

B. Slower clock

C. No prediction

D. Branch prediction and speculative execution

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Correct Answer: Option D

Explanation:
Modern CPUs use advanced predictors.

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

Question #3

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The ROB (Reorder Buffer) size affects:

A. Power only

B. How many instructions can be in flight

C. Cache size

D. Address bus

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Correct Answer: Option B

Explanation:
Larger ROB supports more out-of-order execution.

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

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