Question

Arrange in order of occurance    a)  Obtain the IRQ number from the interrupt controller    b)  I/O APIC transfer interruArrange in order of occurance a) Obtain the IRQ number from the interrupt controller b) I/O APIC transfer interrupt to Local APIC. c) Save the program states d) Local APIC assert the CPU interrupt​pt to Local APIC.    c)  Save the program states    d) Local APIC assert the CPU interrupt​

Answer 1

Answer:

The correct order of occurrence is as following:-

d) Local APIC asserts the CPU interrupt controller.

a) Obtain the IRQ number from the interrupt controller.

b) I/O APIC transfer interrupt to Local APIC.

c) Save the program states.

Explanation:

Definition of context switching:-

It's substantially defined as a operation that involves switching of the CPU from one course or task to another.

In this phenomenon, the accomplishment of the procedure that's present in the running state is adjourned by the kernel and another operation that's present in the ready state is administered by the CPU.

The proceeding might be utilizing a type of scheduling algorithm where after every deposited time quantity, the procedure has to come back to the ready state from the running state.

So, these operation swapping are served with the assist of Context shifting.

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