Question:medium

CPU utilization in polling-based I/O is:

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Polling-based I/O keeps the CPU trapped in a continuous loop checking device readiness flags, which maximizes CPU utilization for overhead. Interrupt-driven I/O resolves this waste by letting the device alert the CPU only when it is ready.

Updated On: Jun 23, 2026

Less than zero
Maximum
Zero
Independent of device speed

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The Correct Option is B

Solution and Explanation

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CPU utilization in polling-based I/O is:

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The Correct Option is B

Solution and Explanation

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