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In Centralised Arbitration ______ is/are is the BUS master.

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In Centralised Arbitration ______ is/are is the BUS master.

(a) Processor

(b) DMA controller

(c) Device

(d) Both Processor and DMA controller

The question was posed to me in unit test.

Enquiry is from Bus Arbitration in division Input/Output Organisation of Computer Architecture

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Right answer is (d) Both Processor and DMA controller

Explanation: The BUS master is the one that decides which will get the BUS.

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