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  • INTERVIEW QUESTIONS OPERATING SYSTEMS IPC DETAILS
    Question :
    Brief about the initial process sequence while the system boots up.?

    Category IPC Interview Questions
    Rating (0.2) By 106 users
    Added on 7/16/2011
    Views 293
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    Answers:

    While booting, special process called the 'swapper' or 'scheduler' is created with Process-ID 0. The swapper manages memory allocation for processes and influences CPU allocation. The swapper inturn creates 3 children:
    ?the process dispatcher,
    ?vhand and
    ?dbflush
    with IDs 1,2 and 3 respectively.
    This is done by executing the file /etc/init. Process dispatcher gives birth to the shell. Unix keeps track of all the processes in an internal data structure called the Process Table (listing command is ps -el).



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