Operating System (OS)
The title bar always displays on

Top of the open windows
Left side of the open window
Right side of the open window
All of above

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Operating System (OS)
Semaphores

are used to do I/O
None of these
synchronize critical resources to prevent deadlock
synchronize critical resources to prevent contention
are used for memory management

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

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

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