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Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).

Software & Operating SystemsOperating System Functions

When a peripheral device requires immediate attention from the operating system, it generates an interrupt. What is this process called?

  1. A.Buffering
  2. B.Polling
  3. C.Spooling
  4. D.InterruptCorrect answer

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Quick fact: The process by which a peripheral device signals the operating system for immediate attention is called an Interrupt.

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