Operating System (OS)
Data encryption

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

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Operating System (OS)
The advantage(s) inherent to using high level languages is (are)

A greater degree of machine independence
Fewer people, less management and shorter transition in learning time
All of these
Improved debugging capability, and superior documentation
None of these

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