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.