Which I/O technique allows a device to notify the CPU when it requires attention?
Options
A.
Program-controlled I/O
B.
Polling
C.
Interrupt-driven I/O
D.
Busy waiting
E.
None of the above
Correct Answer (Detailed Explanation is Below)
C.
Interrupt-driven I/O
Detailed Explanation
Explanation: In interrupt-driven I/O, the device generates an interrupt when it needs CPU attention. This can reduce the need for continuous status checking.