Discussion
Which one of the following extends a private network across public networks?
Answer: B
Correct answer: virtual private network
A VPN carries private traffic across a public network such as the Internet by encapsulating and usually encrypting it, so remote sites and travelling users appear to be on the same private network. An enterprise private network uses the organisation’s own leased infrastructure and does not cross public networks at all; a LAN is confined to one site; and a SAN connects storage devices rather than networks.
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