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

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

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Operating System (OS)
All of the following are task performed by the operating system except

Managing hardware on the computer
Controlling the access that application program has to the CPU
Provides an interface for user to interact with computer
Performing housekeeping task like file compression and disk defragmentation

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