Question: Consider a single - CPU system with only CPU - bound tasks and assume CPU scheduling is always non - preemptive. Also assume each task

Consider a single-CPU system with only CPU-bound tasks and assume CPU scheduling
is always non-preemptive. Also assume each tasks runtime is known in advance, no two
tasks have the same runtime, and that all tasks are ready at system start. Show that
shortest-job-first (SJF) scheduling is the sole optimal scheduling order in terms of mean
task turnaround time. (5 Marks)

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