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Which of the following is used to transfer the data from the DMA controller to the destination?

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Which of the following is used to transfer the data from the DMA controller to the destination?

(a) data bus

(b) address bus

(c) request bus

(d) interrupt signal

I had been asked this question during a job interview.

Enquiry is from DMA topic in division Basic Peripherals of Embedded Systems

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Right choice is (a) data bus

The explanation is: The data bus is used for the transmission of data from the DMA controller to the destinal. The DMA controller can directly select the peripheral in some cases in which the data transfer is made from the peripheral to the memory.

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