Describe what a VPN is and how it works?

Answer Posted / venkatesh

virtual private network, a network that is constructed by
using public wires to connect nodes. For example, there are
a number of systems that enable you to create networks
using the Internet as the medium for transporting data.
These systems use encryption and other security mechanisms
to ensure that only authorized users can access the network
and that the data cannot be intercepted.

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