Question: Answer the following regarding system calls: a) Why are system calls needed? Try to think of the benefits on all levels. b) Who requests, and

Answer the following regarding system calls: a) Why are system calls

Answer the following regarding system calls: a) Why are system calls needed? Try to think of the benefits on all levels. b) Who requests, and who executes system calls? Why? What is meant by dual-mode operation? What is different from a normal function call? c) How is a system call performed? Try to explain all technical details

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