Multiple choice

Which of the following is not a part of operating system?

  1. Supervisor

  2. Performance monitor

  3. job-control program

  4. i/o control program
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Performance monitors are typically separate utilities or add-on tools that track system metrics, not integral components of the operating system kernel. In contrast, the Supervisor (kernel), job-control programs, and I/O control programs are core OS components that manage execution flow, process scheduling, and device operations respectively.

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