In the _______ method for synchronizing the operation of the CPU with an I/O device, a large block of data can be passed from an I/O device to memory directly.
A) programmed I/O
B) interrupt-driven I/O
C) DMA
D) isolated I/O

Question

Quizplus · Accepted Answer

The DMA (Direct Memory Access) method allows a large block of data to be transferred directly between an I/O device and memory, without involving the CPU. This frees up the CPU to perform other tasks while the data transfer is taking place. Programmed I/O and interrupt-driven I/O both require the CPU to be involved in the data transfer, while isolated I/O is not a commonly used method for synchronizing CPU and I/O device operation.

In the _______ Method for Synchronizing the Operation of the CPU