Which architecture is dominant in personal computers? MCQ with Answer and Explanation

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Which architecture is dominant in personal computers?

A. Only ARM

B. MIPS only

C. PowerPC exclusively

D. x86 / x86-64

Answer: Option D

Solution (By JKSSB Mock Tests)

Used by Intel and AMD for PCs.

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

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Question #1

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Which is not typically inside the CPU die?

A. ALU

B. Control Unit

C. L1 Cache

D. Main RAM

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Correct Answer: Option D

Explanation:
Main RAM is separate from the processor chip.

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

Question #2

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The loop buffer or uop cache stores:

A. Decoded micro-operations for loops

B. Addresses

C. Data from memory

D. Power states

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Correct Answer: Option A

Explanation:
Reduces power by avoiding repeated decode.

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

Question #3

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The ROB (Reorder Buffer) size affects:

A. Cache size

B. How many instructions can be in flight

C. Address bus

D. Power only

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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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