Computer-Organization
October 28, 2023
NTA-UGC-NET 2021 Dec & 2022 June Paper-1
October 28, 2023
Computer-Organization
October 28, 2023
NTA-UGC-NET 2021 Dec & 2022 June Paper-1
October 28, 2023

Computer-Organization

Question 15

A hard disk is connected to a 50 MHz processor through a DMA controller. Assume that the initial set-up of a DMA transfer takes 1000 clock cycles for the processor, and assume that the handling of the interrupt at DMA completion requires 500 clock cycles for the processor. The hard disk has a transfer rate of 2000 Kbytes/sec and average block transferred is 4 K bytes. What fraction of the processor time is consumed by the disk, if the disk is actively transferring 100% of the time?

A
Theory Explanation.
Correct Answer: A
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