Question

Which of the four control methods is best suited for rapid response to an input or output event?

1-Programmed I/O
2- Direct Memory Access
3- Interrupt-driven I/O
4- Channel I/O

Answer 1

1-Programmed I/O

Step-by-step explanation:

The most appropriate way of doing it by using programmed I /O . This is because , the handler application as absolute control of sending data , and is synchronous in nature . All other I/O methods are asynchronous and the controlling / handler application has no idea about when the data transfer is going to complete .