Operating System Mcqs

Page No. 60

When one thread immediately terminates the target thread, it is called ____________


aAsynchronous cancellation


bSystematic cancellation


cSudden Termination


dDeferred cancellation



When a web page is loading, and the user presses a button on the browser to stop loading the page?


athe thread loading the page continues with the loading


bthe thread loading the page does not stop but continues with another task


cthe thread loading the page is paused


dthe thread loading the page is cancelled



What is Thread cancellation?


athe task of destroying the thread once its work is done


bthe task of removing a thread once its work is done


cthe task of terminating a thread before it has completed


dnone of the mentioned



In UNIX, the ______________ system call is used to send a signal.


asig


bsend


ckill


dsigsend


View Answer kill

A process can never be sure that a signal it has sent _____________


ahas which identifier


bhas not been lost


chas been sent


dall of the mentioned


View Answer has not been lost

In most cases, if a process is sent a signal while it is executing a system call ____________


athe system call will continue execution and the signal will be ignored completely


bthe system call is interrupted by the signal, and the signal handler comes in


cthe signal has no effect until the system call completes


dnone of the mentioned



In UNIX, the abort() function sends the ________ signal to the calling process, causing abnormal termination.


aSIGTERM


bSIGSTOP


cSIGABORT


dSIGABRT


View Answer SIGABRT

The usual effect of abnormal termination of a program is ____________


acore dump file generation


bsystem crash


cprogram switch


dsignal destruction



The usefulness of signals as a general inter process communication mechanism is limited because ____________


athey do not work between processes


bthey are user generated


cthey cannot carry information directly


dnone of the mentioned



In UNIX, the set of masked signals can be set or cleared using the ________ function.


asigmask


bsigmaskproc


csigprocmask


dsigproc


View Answer sigprocmask

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