COA - DMA

Question

A hard disk with a transfer rate of 1 Mbytes/ second is constantly transferring data to memory using DMA. The processor runs at 500 MHz, and takes 500 and 1000 clock cycles to initiate and complete DMA transfer respectively. If the size of the transfer is 1 Kbytes, what is the percentage of processor time consumed for the transfer operation?________(Rounded off to three decimal)

Answer 1

Is this right??

For more reference: https://gateoverflow.in/116524/coa-dma-doubt

Comments

Yes your answer is correct. But I have a small error to point out.

You assumed $1KB$ data as $1000B$ for calculation purposes, but I won’t recommend it.

Whenever dealing with data, take $K=2^{10}, M=2^{20}$ and so on. And when dealing with bandwidth take $K=10^{3}, M=10^{6}$ and so on.
For above question answer will remain the same but taking data as power of 10 is just wrong according to me.