Which of the following does not interrupt a running process?

  1. Device
  2. Timer
  3. Scheduler
  4. Power Failure

Answer (Detailed Solution Below)

Option 3 : Scheduler

Detailed Solution

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The correct answer is Scheduler.

key-point-image Key Points

  • The scheduler is a system software that manages process scheduling in the operating system.
    • It determines which process runs at any given time based on a specific scheduling algorithm.
    • Schedulers do not interrupt running processes but instead manage the execution sequence of processes.
    • There are three types of schedulers: long-term (job scheduler), short-term (CPU scheduler), and medium-term.
    • The short-term scheduler (CPU scheduler) selects a process from the ready queue and allocates the CPU to it.
    • Schedulers ensure that all processes get a chance to execute and manage the allocation of system resources efficiently.

additional-information-image Additional Information

  • Interrupts are signals sent to the CPU by hardware or software indicating an event that needs immediate attention.
  • Common types of interrupts include device interrupts, timer interrupts, and power failure interrupts.
  • Device interrupts occur when an I/O operation completes, timer interrupts occur at regular intervals, and power failure interrupts occur during power outages.
  • Schedulers work in conjunction with interrupts to manage process execution and resource allocation.

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