Q. Which of the following system call is more powerful (in waiting mechanism) than wait system call?

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Q. If the child dies first but the entry of that child in the process table is still present, then that process is called ____

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Q. Every process belongs to a process group.

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Q. ____ exec is responsible for executing programs on a UNIX system.

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Q. Which of the following system call is used for duplicating file descriptor?

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Q. We can also duplicate the file descriptor using ___

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Q. Which of the following system call is preferred over dup and dup2 for replicating file descriptor?

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Q. Which of the following system call is used for inter-process communication?

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Q. We can use pipe with fork system call.

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Q. The action that a signal takes on receipt of a signal is called ____

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Q. The sources from where the signals can be generated are:

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Q. There are _____ signals that are generated from the keyboard.

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Q. Which of the following signals are generated from the hardware?

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Q. ___ system call behaves in an identical manner to the kill command.

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Q. Which library function uses kill to send any signal to the current process?

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Q. Which system call is used to set a timer that generates the SIGALARM signal?

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Q. If two users execute the same program, the memory requirements are doubled.

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Q. Address space of a process is virtual.

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Q. Which of the following system calls returns one or more file descriptors?

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Q. The environment variables are available in _____

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