Question

 

 Differentiate between pre-emptive and non-pre-emptive scheduling algorithms. Provide one example for each and explain a scenario where one would be more suitable than the other.

16 Sep 2025
Answer :
Word Count : 493
Pre-emptive and non-pre-emptive scheduling algorithms are two fundamental approaches in operating system process scheduling, each defining how CPU time is allocated to processes. In pre-emptive scheduling, the operating system has the authority to interrupt a currently running process to allocate the CPU to another process. This is done based on certain criteria such as priority, arrival time, or remaining execution time. Pre-emptive scheduling ensures that high-priority or time-sensitive processes get CPU attention promptly, improving system responsiveness and reducing waiting time for critical tasks. A common example of a pre-emptive algorithm is the Round Robin (RR) scheduling. In Round Robin, each process is assigned a fixed time slice or quantum, and the CPU switches to the next process in the ready queue when the _____ ___ ____ ________ _____.
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