CCNA Cyber Ops FAQ: Introduction to Virtual Private Networks (VPNs) Q1. Which of the following are examples of protocols used for VPN implementations? A. TCP B. Secure Sockets Layer (SSL) C. UDP D. Multiprotocol Label Switching (MPLS) E. Internet Protocol Security (IPsec) Answer: B, D, E. MPLS, IPsec, SSL, PPTP, and GRE are examples of protocols used for VPN … [Read more...]