Which company developed the x86-64 architecture extension? MCQ with Answer and Explanation

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Which company developed the x86-64 architecture extension?

A. Qualcomm

B. ARM

C. AMD

D. Intel only

Answer: Option C

Solution (By JKSSB Mock Tests)

AMD64 extended the original x86.

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

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Question #1

Which is an advantage of multi-core processors?

A. Better multitasking and parallel apps

B. Always lower cost

C. No heat issues

D. Simpler design

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Correct Answer: Option A

Explanation:
They handle multiple tasks more effectively.

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

Question #2

Which instruction set supports 256-bit vectors?

A. MMX

B. AVX2

C. x87

D. SSE only

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Correct Answer: Option B

Explanation:
Advanced Vector Extensions 2.

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

Question #3

Integrated memory controller (IMC) reduces:

A. Memory access latency

B. Power efficiency

C. Cache performance

D. Core speed

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Correct Answer: Option A

Explanation:
On-die controller.

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

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