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4. (i) What is the main difference between user-level threads and kernel-supported threads? (ii) For a client application in a client-server system would you use
4. (i) What is the main difference between user-level threads and kernel-supported threads? (ii) For a client application in a client-server system would you use user-level threads or kernel-supported threads? Explain. (iii) For a server application in a client-server system would you use user-level threads or kernel-supported threads? Explain. 5. (i) Explain each step that is performed by the dispatcher during a context switch between two processes. (ii) Explain what would be different (if any) if the context switch occurs between two threads of the same controlling process. 6. Suppose that an operating system distinguishes the time that a process or thread is running in user mode and the time that code is executed in system mode on behalf of that process or thread. Modify the following process state diagram to reflect the user and system running modes
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