An interrupt driven IO is used:

2017

Answer: C. because the events are asynchronous and during the interval for wait for data the processor can perform other tasks — Interrupt-driven I/O is useful for asynchronous events because the processor can do other work while waiting for the device.

1. A.

   to handle synchronous input-outputs

2. B.

   as interrupt service routine executes fast

3. C.

   because the events are asynchronous and during the interval for wait for data the processor can perform other tasks

4. D.

   because the events are synchronous and processor can simultaneously perform other tasks

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