Operating System (OS)
Thrashing can be avoided if

the pages, belonging to the working set of the programs, are in main memory
the speed of CPU is increased
the speed of I/O processor is increased
None of these
All of these

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Operating System (OS)
Data encryption

None of these
is mostly used by financial networks
is not necessary, since data cannot be intercepted
is mostly used by public networks
cannot be used by private installations

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