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

to provide complete file naming freedom to the users and to permit controlled sharing of files
None of these
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.
All of these

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Operating System (OS)
A program

is typically characterized by interactive processing and time of the CPU
is the device where information is stored
is a sequence of instructions
is a device that performs a sequence of operations specified by instructions in memory.
None of these

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Operating System (OS)
All of the following are task performed by the operating system except

Performing housekeeping task like file compression and disk defragmentation
Managing hardware on the computer
Provides an interface for user to interact with computer
Controlling the access that application program has to the CPU

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