Question: a) With reference to at least one example, explain the tollowing disk scheduling policies Shortest Seek Time First (SSTF), SCAN, and . C-SCAN 5b) Wha

a) With reference to at least one example, explain the tollowing

a) With reference to at least one example, explain the tollowing disk scheduling policies Shortest Seek Time First (SSTF), SCAN, and . C-SCAN 5b) Wha are system calls, and why are they important in the design and implementation of an operating system? Explain why almost every process needs to execute at least one system call during its execution

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