Question

Which communication mechanism should you use if you want to share small amounts of non-time critical data with the CPU?

		Interrupts
		Polls
		PMIO
		DMA

Answer 1

`Hey,

Note: Brother if you have any queries related the answer please do comment. I would be very happy to resolve all your queries.

Interrupt is a hardware mechanism in which, the device notices the CPU that it requires its attention. Interrupt can take place at any time. So when CPU gets an interrupt signal trough the indication interrupt-request line, CPU stops the current process and respond to the interrupt by passing the control to interrupt handler which services device.

SO, OPTION A IS CORRECT

Kindly revert for any queries

Thanks.