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The instruction that refers to only code segment descriptors with DPL equal to or less than the task CPL is

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The instruction that refers to only code segment descriptors with DPL equal to or less than the task CPL is

(a) CALL

(b) IRET

(c) ESC

(d) RET and IRET

This question was addressed to me in examination.

I'm obligated to ask this question of Privilege topic in chapter 80286-80287-A Microprocessor with Memory Management and Protection of Microprocessor

1 Answer

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by (49.2k points)
Correct choice is (d) RET and IRET

For explanation I would say: The RET and IRET instructions are to refer to only code segment descriptors with DPL equal to or less than the task CPL.

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