Operating System (OS)
The dispatcher

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

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Operating System (OS)
Thrashing

always occurs on large computers
can be caused by poor paging algorithms
can always be avoided by swapping
None of these
is a natural consequence of virtual memory systems

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Operating System (OS)
The FIFO algorithm

None of these
execute first the job that has been in the queue the longest
executes first the job that first entered the queue
executes first the job with the least processor needs
executes first the job that last entered the queue

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