Q: When does the register set get expanded in the 80286 processor?

A In real mode
B In expanded mode
C In protected mode
D In interrupt mode

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Answer: C

Explanation:

The register set in the 80286 processor is expanded in protected mode. Two additional registers, the index register and base pointer register, are added to the general-purpose and segment registers. This expansion allows the processor to support virtual memory and protected mode operation.

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Q: When does the register set get expanded in the 80286 processor?

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