Operating System (OS)
The function(s) of file system is (are):

to provide complete file naming freedom to the users and to permit controlled sharing of files
All of these
to provide for long and short term storage of files with appropriate economic tradeoffs.
to provide security against loss of information due to system failure
None of these

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Operating System (OS)
The FIFO algorithm

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

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Operating System (OS)
The dispatcher

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

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