unix, Operating System

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what is difference between file descriptor and file pointer?

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Copy on write in virtual memory, how copy on write on pages when many proc...

how copy on write on pages when many process works at a same time?

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Define the “turn-around” time of a user job Turn- around time is total time taken to execute the job.

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What is independent process? A process is independent it cannot influence or be affected by the other processes implementing in the system. Any process does not share data with

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What is the main advantage of multiprogramming? Multiprogramming makes efficient use of the CPU by overlapping the demands for the CPU and its I/O devices from various users. I

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Q. What are the major differences between operating systems for mainframe computers and personal computers? Answer: In general operating systems for batch systems have simpler

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Hierarchical paging Single way is to use a two-level paging algorithm, in which the page table itself is also paged. A logical address is separated into a page number and a pag

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Debugging a multi threaded program The following list points out few of the more frequent oversights and errors that can cause bugs in multithreaded programs. 1.    Ephemeral

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