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Operating System (OS)

Operating System (OS)
Information in a memory that is no longer valid or wanted is known as

None of these
garbage
non-volatile
surplus
volatile

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

paging suffers from internal fragmentation
None of these
virtual memory is used only in multi-user systems
segmentation suffers from external fragmentation
segmented memory can be paged

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Operating System (OS)
What is the name of the operating system which was originally designed by scientists and engineers for use by scientists and engineers?

MS DOS
XENIX
None of these
UNIX
OS/2

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Operating System (OS)
Which of the following is default location of saving and opening file ?

My documents
All of the listed here
Desktop
My computer

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Operating System (OS)
Which of the following scheduling objectives should be applied to the following: the system should admit jobs to create a mix that will keep most devices busy

to obey priorities
to be predictable
None of these
to balance resource utilization
to be fair

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Operating System (OS)
Sleep is a good mode to use because

All of the listed here
It makes computer fresh after it wakes up
It saves power which in true is saving money
It consumes low battery when you start it again

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