Which one of the following facilitates transfer of bulk data from hard disk to main memory with the highest throughput?
Refer this book:
From Page : 235
ANSWER: A) DMA based I/O transfer
In DMA (Direct Memory Access) mode, bulk amount of data is transferred from IO Device to Main Memory without the involvement of CPU. Whenever Prg Size > MM size, Virtual Memory is used with the help of Secondary Memory. Secondary memory is interfaced to system via DMA Module.