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What is preemptive and nonpreemptive scheduling?
Under nonpreemptive scheduling once the CPU has been allocated to a process, the process keeps the CPU unless it releases the CPU either by terminating or switching to the waiting state. Preemptive scheduling can preempt a process which is utilizing the CPU in among its execution and give the CPU to another process.
How a virtual memory can be implemented? What are the benefits of using virtual memory?
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what is file abstraction?
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a program that can do cpu scheduling algorithm priority using javascript or php to display gaant chart and calculate waiting and average waiting time
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