Virtual Private Network Technologies Questions

Fundamentals of virtual private network technologies, deployment models, and the encryption mechanisms that underlie secure tunneling. Candidates should understand common VPN types and use cases including site to site connections, remote access for individual users, and client to site configurations. Review major protocol families by full name such as Internet Protocol Security, Secure Sockets Layer and Transport Layer Security VPNs, and Layer Two Tunneling Protocol, including tunnel versus transport modes, encapsulation, and considerations for network address translation traversal. Cover authentication methods including passwords, certificate based authentication, and multi factor approaches, as well as how key exchange and Public Key Infrastructure support secure sessions. Be ready to discuss performance and operational trade offs such as CPU overhead from encryption, split tunneling, routing implications, and deployment considerations for enterprise and cloud environments.