Operating System (OS)
What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them?

Multitasking
None of these
Paging
Windowing
Partitioning

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

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

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Operating System (OS)
A real time operating system is most likely to be used for which of the following task?

Managing the access to system files in a laptop computers
Controlling access to a shared printer in a network
Controlling the fuel injection system of an automobile engines
Ensuring that system clock works correctly on server

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