Multiple choice

Which of the following techniques is preferable for transferring large data to & from a memory in a short time?

  1. Programmed I/O

  2. Interrupt-driven I/O

  3. DMA

  4. None of the above

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Direct Memory Access (DMA) allows hardware subsystems to access main system memory independently of the central processing unit, making it the most efficient way to transfer large blocks of data.