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

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

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Operating System (OS)
Link encryption

None of these
is used only to debug
is less secure than end-to-end encryption
is more secure than end-to-end encryption
can not be used in a public network

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Operating System (OS)
Backups should be done

as several image copies, followed by an incremental
weekly for most installations
daily for most installations
as several incrementals, followed by an image copy
None of these

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