Operating System (OS)
Trojan-Horse programs

are hidden programs that do not show up on the system
do not usually work
are legitimate programs that allow unauthorized access
None of these
usually are immediately discovered

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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 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
All of these

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