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.
None of these
to provide security against loss of information due to system failure
All of these
to provide complete file naming freedom to the users and to permit controlled sharing of files

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
Memory management is :

replaced with virtual memory on current systems
not used in modern operating system
not used on multiprogramming systems
None of these
critical for even the simplest operating systems

ANSWER DOWNLOAD EXAMIANS APP