The opcode fetch is part of: MCQ with Answer and Explanation

The opcode fetch is part of:

A. Execution stage

B. Write-back stage

C. Memory stage

D. Instruction fetch stage

Answer: Option D

First step in processing an instruction.

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

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Question #1 Report Error

The store buffer holds:

A. Fetched instructions

B. Decoded uops

C. Branch targets

D. Data waiting to be written to memory

Correct Answer: Option D

Explanation:
It allows execution to continue.

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

Question #2 Report Error

EPIC architecture was used in:

A. Embedded controllers

B. Intel Itanium processors

C. ARM mobiles

D. Modern x86

Correct Answer: Option B

Explanation:
Explicitly Parallel Instruction Computing.

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

Question #3 Report Error

The reorder buffer enables:

A. No speculation

B. In-order execution only

C. Reduced registers

D. In-order commit with out-of-order execution

Correct Answer: Option D

Explanation:
It maintains program order.

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