What does VPN stand for?

VPN stands for Virtual Private Network. A VPN creates a secure connection over a less secure network, such as the Internet. By using encryption and tunneling protocols, a VPN allows users to send and receive data as if they were directly connected to a private network. This aspect of privacy and security is critical, especially when accessing sensitive information or when using public networks, as it protects data from unauthorized access and ensures that communications remain confidential.

In contrast, the other choices do not accurately reflect the core functionality and purpose of a VPN. For example, "Virtual Public Network" suggests an open network instead of a private one, while "Variable Private Network" and "Virtual Protected Network" do not represent established terminology used in network security conversations. Thus, "Virtual Private Network" is the correct and widely recognized terminology in the field.