How does a virtual private network (VPN) provide security?
What will be an ideal response?
While e-mail and file encryption can be used to transfer individual messages and files securely over the Internet, a virtual private network (VPN) is designed to be used when a continuous secure channel over the Internet is needed. A VPN provides a secure private tunnel from the user’s computer through the Internet to another destination and is most often used to provide remote employees with secure access to a company network. VPNs use encryption and other security mechanisms to ensure that only authorized users can access the remote network and that the data cannot be intercepted during transit. Since it uses the Internet instead of an expensive private physical network, a VPN can provide a secure environment over a large geographical area at a manageable cost. Once a VPN is set up, the user just needs to log on (such as with a username/password combination or a security token) in order to use the VPN.
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Fill in the blank(s) with the appropriate word(s).
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A. ?phase B. ?amplitude C. ?period D. ?frequency