Operating System (OS)
The necessary conditions needed before deadlock can occur?

Mutual Exclusion, No Hold and wait, Preemption, Circular Wait
No Mutual Exclusion, Hold and wait, Preemption, Circular Wait
Mutual Exclusion, Hold and wait, Preemption, No Circular Wait
Mutual Exclusion, Hold and wait, No Preemption, Circular Wait

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

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

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