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

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

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Operating System (OS)
Fork is

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

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Operating System (OS)
Thrashing

is a natural consequence of virtual memory systems
always occurs on large computers
None of these
can be caused by poor paging algorithms
can always be avoided by swapping

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