The Simplest CPU – scheduling algorithm is _____

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The Simplest CPU – scheduling algorithm is ______.

1. SJF scheduling algorithm
2. Round-robin scheduling algorithm
3. Multilevel scheduling algorithm
4. FCFS scheduling algorithm

Correct Option: D

First-Come, First-Served (FCFS) Scheduling is the simplest CPU scheduling algorithm. It is like customers waiting in line at the bank or the post office or at a copying machine. Under it, the process that requests the CPU first is allocated the CPU first. However, the average waiting time under FCFS is long.