Operating System (OS)
What is dispatch latency ?

None of the listed here
The time taken by the processor to write a file into disk
The time taken by the dispatcher to stop one process and start another
The whole time taken by all processor

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Operating System (OS)
Semaphores

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

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