Question: 2) Given that a multiple interrupt system has three I/O devices, namely, I/O 1, I/O 2 and I/O 3. If the system uses the

2) Given that a multiple interrupt system has three I/O devices, namely,

2) Given that a multiple interrupt system has three I/O devices, namely, I/O 1, I/O 2 and I/O 3. If the system uses the nested interrupt approach to handle the interrupts and the priority assigned to the I/O is: I/O 1 > I/O 2 > I/O 3. I/O 1 needs 10s to complete, I/O 2 needs 8s to complete and I/O 3 needs 12s to complete. a. Explain the mechanism of the nested interrupt approach. b. If the I/O interrupts occurred according to the following time: I/O 1: 8s I/O 2: 5s I/O 3: 3s, 15s Draw an appropriate diagram to illustrate how the I/O devices can be handled by the system.

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