Discussion
Which one of the following extends a private network across public networks?
Answer: B
The answer is a Virtual Private Network.
A VPN extends a private network across a public network such as the Internet. It creates an encrypted tunnel between the user's device and the private network, so that a remote employee, for example, can use the office network securely as if connected locally.
A Local Area Network covers a small area such as one office or building and does not use public networks. An enterprise private network is an organisation's own network linking its sites, and a storage area network is a dedicated high-speed network connecting servers to storage devices.
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