How does a CPU know if a data transfer has been completed if an I/O device uses DMA to transfer data?
A) An interrupt is generated.
B) The status register is polled.
C) The data register is empty.
D) The program counter is incremented.

Question

Quizplus · Accepted Answer

DMA operations typically signal completion through an interrupt to the CPU, indicating that the data transfer has been successfully completed and the CPU can proceed with other tasks or handle the data that has been transferred.

How Does a CPU Know If a Data Transfer Has