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The size of the data count register of a DMA controller is 16 bits. The processor needs to transfer a file of 29,154 kilobytes from disk to main memory. The memory is byte addressable. The minimum number of times the DMA controller needs to get the control of the system bus from the processor to transfer the file from the disk to main memory is _____.

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Correct answer is 456

DMA controller needs ⇒ 29154kB/216 byte ⇒ 455.53125 = 456

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