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

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

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Operating System (OS)
Which of the following statement is true.

Thrashing is a natural consequence of virtual memory systems.
None of these
All of these
Seek analysis is used for analysing control-unit busy problems.
The LRU algorithm pages out pages that have been used recently

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