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Q. Is disk scheduling except FCFS scheduling useful in a single-user environment? describe your answer.
Answer: In a single-user environment the I/O queue typically is empty. Requests in general arrive from a single process for one block or for a sequence of consecutive blocks. In these cases the FCFS is an economical method of disk scheduling. However LOOK is nearly as easy to program and will give much better performance when multiple processes are performing concurrent I/O such as when a Web browser retrieves data in the background while the operating system is paging as well as another application is active in the foreground.
What is protection of input output?
What is process control block? Every process is represented in the OS by a process control block. It has many pieces of information associated with an exact process.
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LINUX VS WINDOWS I/O MANAGEMENT
Second chance Algorithm When the page is chosen the reference bit is checked to see whether it has been referenced before. If that is the case after that it is given a second c
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