Which one of the following is not a layer of operating system? Options: A . &nbspKernel B . &nbspShell C . &nbspApplication program D . &nbspCritical selection

Which one of the following is not a layer of operating system?

Question

Which one of the following is not a layer of operating system?

Options:

A . Kernel

B . Shell

C . Application program

D . Critical selection

Answer: Option D

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