Question

Which of the following statements is true for DMA: (only one correct answer) A. In DMA, Processor checks status until the operation is complete B. In DMA, Processor is interrupted when I/O module ready to execute data C. In DMA, no interrupt is produced D. In DMA, interrupt is sent when the task is completed E. None of the above

Answer 1

Answer:

D. In DMA, interrupt is sent when the task is completed

Explanation:

Note, the term Direct Memory Access simply refers to a computer feature that allows hardware subsystems to directly access the main system memory of a computer, without any the aid of the central processing unit (CPU).

It is a fact that while the transfer process is ongoing, an interrupt (interrupt signal) is not sent until when the task is completed.