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Operating System (OS)

Operating System (OS)
Which one is not a system tool?

Disk defragment
Virus scanning
Backup
All of the listed here

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Operating System (OS)
To avoid the race condition, the number of processes that may be simultaneously inside their critical section is

None of these
8
1
16

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Operating System (OS)
While running DOS on a PC, which command would be used to duplicate the entire diskette?

COPY
None of these
DISKCOPY
TYPE
CHKDSK

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Operating System (OS)
Scissoring enables

entire data to be displayed
no data to be displayed
a part of data to be displayed
full data display on full area of screen
None of these

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Operating System (OS)
World Wide Web is being standard by

World wide consortium
World wide web standard
W3c
Worldwide corporation

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

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

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