Question: 7. Most hardware architectures provide an instruction to return from an interrupt, such as iret. This instruction switches the mode of operation from kernel-mode to

7. Most hardware architectures provide an instruction to return from an

7. Most hardware architectures provide an instruction to return from an interrupt, such as iret. This instruction switches the mode of operation from kernel-mode to user-mode. a. Explain where in the operating system this instruction would be used b. Explain what happens if an application program executes this instruction

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