Which one of the following is not a layer of operating system?
A. Kernel
B. Shell
C. Application program
D. Critical selection
Answer: Option D
Solution(By Examveda Team)
A critical section is a code segment that accesses shared variables and has to be executed as an atomic action. It means that in a group of co-operating processes, at a given point of time, only one process must be executing its critical section.This Question Belongs to Computer Fundamentals >> Operating System
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