Operating System (OS)
A critical region is

one which is enclosed by a pair of P and V operations on semaphores
a program segment where shared resources are accessed
a program segment that has not been proved bug-free
none is the above
a program segment that often causes unexpected system crashes

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Operating System (OS)
Indicate which, of the following, in not true about an interpreter

Interpreter generates an object program from the source program
All of these
None of these
Interpreter is a kind of translator
Interpreter analyses each source statement every time it is to be executed

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Operating System (OS)
What is the meaning of "Hibernate" in Windows XP/Windows 7?

Restart the Computer in hibernate mode
Shutdown the Computer without closing the running applications
Restart the Computer in safe mode
Shutdown the Computer terminating all the running applications

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