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

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

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Operating System (OS)
Link encryption

is more secure than end-to-end encryption
is used only to debug
None of these
is less secure than end-to-end encryption
can not be used in a public network

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