Operating System (OS)
The dispatcher

is always small and simple
never changes task priorities
actually schedules the tasks into the processor
puts tasks in I/O wait
None of these

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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, No 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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