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The DMA differs from the interrupt mode by __________

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The DMA differs from the interrupt mode by __________

(a) The involvement of the processor for the operation

(b) The method of accessing the I/O devices

(c) The amount of data transfer possible

(d) None of the mentioned

I have been asked this question in examination.

Origin of the question is Direct Memory Access in chapter Input/Output Organisation of Computer Architecture

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Right option is (d) None of the mentioned

The explanation: DMA is an approach of performing data transfers in bulk between memory and the external device without the intervention of the processor.

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