Which of the following option with reference to UNIX operating system is not correct?
(A) INT signal is sent by the terminal driver when one types and it is a request to terminate the current operation.
(B) TERM is a request to terminate execution completely. The receiving process will clean up its state and exit.
(C) QUIT is similar to TERM, except that it defaults to producing a core dump if not caught.
(D) KILL is a blockable signal.
Answer: (D)
Explanation: In UNIX operating system:
- INT signal is sent by the terminal driver when one types and it is a request to terminate the current operation.Correct
- TERM is a request to terminate execution completely. The receiving process will clean up its state and exit.Correct
- QUIT is similar to TERM, except that it defaults to producing a core dump if not caught.Correct
- kILL is not a blockable signal.
So, option (D) is correct.
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