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

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

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Operating System (OS)
Which of the following is not true about documentation?

Documentation, of a system, should be as clear and direct as possible
None of these
All of these
Documentation increases the maintenance time and cost
Documentation gives better understanding of the problem

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

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

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