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Q. What system calls have to be implementing by a command interpreter or shell in order to start a new process?
Answer: In the UNIX systems a fork system call followed by an exec system call need to be performed to start a new process. The fork call clones the presently executing process while the exec call overlays a new process based on a different executable over the calling process.
What is a pure demand paging? When starting implementation of a process with no pages in memory, the operating system sets the instruction pointer to the first instruction of t
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Since each thread has its own processing space therefore communication between threads will need to be done through a common global variable. Since multiple threads can access the
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Processes and threads each have their place in multi-programming, generally to hide latency and to maximize CPU utilization. With the continuing spread of multi-core processors in
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