Which type of I/O communication method requires the processor to check the…
2023
Which type of I/O communication method requires the processor to check the device status repeatedly?
Answer: B. Polling — In Polling (also known as Programmed I/O), the processor constantly monitors the control status register of an I/O device in a continuous loop. It repeatedly…
- A.
Cache Coherency
- B.
Polling
- C.
Direct Memory Access
- D.
Interrupt-driven I/O
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Correct answer: B
In Polling (also known as Programmed I/O), the processor constantly monitors the control status register of an I/O device in a continuous loop. It repeatedly checks whether the device is ready for data transfer, consuming significant CPU clock cycles. Therefore, Option B is correct.
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