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The controller is connected to the ____

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The controller is connected to the ____

(a) Processor BUS

(b) System BUS

(c) External BUS

(d) None of the mentioned

I have been asked this question during a job interview.

Query is from Direct Memory Access in section Input/Output Organisation of Computer Architecture

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Best answer
The correct choice is (b) System BUS

The best explanation: The controller is directly connected to the system BUS to provide faster transfer of data.

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