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

All of these
None of these
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
to provide security against loss of information due to system failure

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Operating System (OS)
The advantage of a command processor running only built-in commands is:

users can create system programs and run them as commands
the processing is much faster than would other-wise be the case when user defined commands are used
flexibility to the users in running lists of commands by simply collecting them in named batch command files
None of these
the command set being common across different hardware configurations

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