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

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

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Operating System (OS)
Fork is

the creation of a new job
the dispatching of a task
the creation of a new process
None of these
increasing the priority of a task

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Operating System (OS)
Link encryption

can not be used in a public network
None of these
is less secure than end-to-end encryption
is used only to debug
is more secure than end-to-end encryption

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