Operating System (OS)
The FIFO algorithm

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

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Operating System (OS)
Thrashing

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

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Operating System (OS)
System maintenance:

is necessary on all systems, regardless of how good
is usually not necessary
always requires several programs
is not required if the system is well written
None of these

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Operating System (OS)
System generation:

varies in difficulty between systems
None of these
is always quite simple
requires extensive tools to be understandable
is always very difficult

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