The GATE Grind

GATE 2022 CS – Question 17

Computer Organization and Architecture · I/O Interface: Interrupt and DMA · 1 mark · Multiple choice

Which one of the following facilitates transfer of bulk data from hard disk to main memory with the highest throughput?

  1. DMA based I/O transfer
  2. Interrupt driven I/O transfer
  3. Polling based I/O transfer
  4. Programmed I/O transfer

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Show answer and explanation

Correct answer: (A) DMA based I/O transfer

Explanation

DMA moves blocks of data directly between the device and memory without CPU involvement per word, giving the highest throughput for bulk transfers.