Operating System (OS)
A page fault

None of these
is a reference to a page belonging to another program
is an access to a page not currently in memory
is an error is a specific page
occurs when a program accesses a page of memory

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Operating System (OS)
The dispatcher

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

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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
is a natural consequence of virtual memory systems
None of these

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