Instruction Set Architecture (ISA) defines: MCQ with Answer and Explanation

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Instruction Set Architecture (ISA) defines:

A. Cooling method

B. The interface between hardware and software

C. Physical layout

D. Manufacturing process

Answer: Option B

Solution (By JKSSB Mock Tests)

Like x86, ARM specify instructions.

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

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Question #1

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Which instruction set supports 256-bit vectors?

A. AVX2

B. MMX

C. SSE only

D. x87

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Correct Answer: Option A

Explanation:
Advanced Vector Extensions 2.

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

Question #2

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The main bottleneck in many systems is:

A. Memory access speed (von Neumann bottleneck)

B. Registers

C. ALU only

D. CPU speed always

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Correct Answer: Option A

Explanation:
Shared memory access can limit performance.

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

Question #3

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In CPU, 'retirement' refers to:

A. Memory access

B. Fetching instructions

C. Decoding phase

D. Committing instruction results to architectural state

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Correct Answer: Option D

Explanation:
It completes the instruction lifecycle.

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

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