Final answer:
A site-to-site VPN uses routers on the edge of each site to connect entire networks to each other, enabling secure communication and resource sharing between different locations of a company.
Step-by-step explanation:
Which VPN Implementation Uses Routers on the Edge of Each Site?
The type of VPN implementation that uses routers on the edge of each site is a site-to-site VPN. A site-to-site VPN is designed to connect entire networks to each other, meaning that users at one site can access resources and network shares of another site as if they were local. This type of VPN is typically used by companies with multiple office locations to secure and facilitate communication and file sharing between their different sites. These routers establish a virtual 'tunnel' over the internet that is protected by encryption, ensuring that the data transmitted between the sites is secure from eavesdropping.
In contrast, a remote access VPN allows individual users to connect to a network from a remote location, host-to-host VPN connects a single machine to another single machine, and an always-on VPN ensures that a device is always connected to the VPN without user intervention. Each approach meets different use cases and security requirements. But in the context of edge router usage for entire site connections, site-to-site VPN is the correct answer.