Operating System (OS)
The operating system allows the user to organize the computer's contents in a hierarchical structure of directories that include all of the following except:

Drives
Folders
Files
System

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

All of these
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.

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Operating System (OS)
Thrashing can be avoided if

the pages, belonging to the working set of the programs, are in main memory
the speed of CPU is increased
the speed of I/O processor is increased
All of these
None of these

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