Identify the form of communication best describes the I/O mode amongst the following:
A. Programmed mode of data transfer
B. DMA
C. Interrupt mode
D. Polling
Answer:A
Identify the form of communication best describes the I/O mode amongst the following:
A. Programmed mode of data transfer B. DMA C. Interrupt mode D. Polling
Explanation: In polling the processor checks each of the device if they wish to perform data transfer and if they do it performs the particular operation.