Which of the following process state transitions is not possible in a typical…

2025

Which of the following process state transitions is not possible in a typical operating system?

  1. A.

    Running → Ready

  2. B.

    Waiting → Ready

  3. C.

    Ready → Waiting

  4. D.

    Running → Waiting

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Correct answer: C

In a typical five-state process model, transitions follow strict rules. For instance, a blocked process cannot transition directly to running; it must first move to the ready state. Direct jumps like new-to-running or blocked-to-running violate standard scheduling protocols.

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