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

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

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Operating System (OS)
A public key encryption system

allows anyone to decode the transmission
None of these
does not encode the data before transmitting it
allows only the correct sender to decode the data
allows only the correct receiver to decode the data

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Operating System (OS)
Feed back queue

dispatch tasks according to execution characteristics
are very easy to implement
require manual intervention to implement properly
None of these
are used to favor real-time tasks

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