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

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

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Operating System (OS)
A public key encryption system

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

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Operating System (OS)
Feed back queue

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

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