Operating System (OS)
The LRU algorithm

pages out pages that have been used recently
pages out the first page in a given area
pages out pages that have not been used recently
pages out pages that have been least used recently
None of these

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Operating System (OS)
Data encryption

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

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