Operating System (OS)
The working set theory of programming behaviour of processes running within an operating system involves

disk scheduling mechanisms
assigning the CPU to processes
the collection of pages that a process accesses
None of these
coalescing holes in memory

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Operating System (OS)
The dispatcher

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

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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 last entered the queue
executes first the job with the least processor needs
executes first the job that first entered the queue

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