Which of the following is NOT described as a VPN type in the material?

• A. Host-to-host
• B. Remote access
• C. Site-to-site
• D. Network-to-network

Answer: (D)

In VPN discussions, the established types are generally remote access and site-to-site. A remote access VPN lets individual devices connect securely to a private network from outside, usually via client software. A site-to-site VPN links entire networks—such as a company’s main office to a branch office—through gateways, so the endpoints are networks, not individual hosts. A host-to-host VPN describes a secure connection directly between two hosts, which is a less common way to frame VPN connections but is sometimes mentioned. The term network-to-network isn’t described as a distinct VPN type in the material; it’s more of a description of connecting networks, which is essentially what a site-to-site VPN already covers. Therefore, network-to-network is the best answer for what isn’t described as a VPN type.