The main bottleneck in many systems is: MCQ with Answer and Explanation

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The main bottleneck in many systems is:

A. ALU only

B. Registers

C. Memory access speed (von Neumann bottleneck)

D. CPU speed always

Answer: Option C

Solution (By JKSSB Mock Tests)

Shared memory access can limit performance.

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

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Question #1

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The reorder buffer in out-of-order CPUs helps maintain:

A. Faster fetch

B. ALU speed

C. Program order for retirement

D. Memory size

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Correct Answer: Option C

Explanation:
Ensures correct sequential appearance of results.

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

Question #2

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A CPU's TDP rating indicates:

A. Transistor Density Parameter

B. Thread Distribution Protocol

C. Total Data Processed

D. Thermal Design Power

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Correct Answer: Option D

Explanation:
Maximum heat output under sustained load.

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

Question #3

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FMA instruction stands for:

A. Fused Multiply-Add

B. Fast Memory Access

C. Flag Management Algorithm

D. Fetch Memory Address

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Correct Answer: Option A

Explanation:
Performs multiplication and addition in one step.

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

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