PrepAway - Latest Free Exam Questions & Answers

What process is used to accomplish high-speed data transfer between a peripheral device and computer memory, b

What process is used to accomplish high-speed data transfer between a
peripheral device and computer memory, bypassing the Central Processing
Unit (CPU)?

PrepAway - Latest Free Exam Questions & Answers

A.
Direct memory access

B.
Interrupt processing

C.
Transfer under program control

D.
Direct access control

Explanation:
With DMA, a DMAcontroller essentially takes control of the memory
busses and manages the data transfer directly. Answer interrupt

processing involves an external signal interrupting the
normal CPU program flow. This interrupt causes the CPU to halt
processing and jump to another program that services the interrupt.
When the interrupt has been serviced, the CPU returns to continue
executing the original program. Program control transfer,
answer c, is accomplished by the processor executing input/output
(I/O) instructions. Answer Direct access control is a distracter.


Leave a Reply