Which technique allows the CPU to check an I/O device status repeatedly until it is ready?

Options

  • A. Interrupt-driven I/O
  • B. Polling
  • C. Direct Memory Access
  • D. Spooling
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

B. Polling

Detailed Explanation

Explanation: Polling is the process in which the CPU repeatedly reads a device status register to check whether the device is ready for data transfer.