Your question is How VPNs Work. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
How does a VPN work?
Asked in the Technical round (security theory) stage. The author says they were asked a lot of questions from this listed set.
Explain the packet path through a VPN, including tunnel establishment, peer authentication, encryption, encapsulation, routing, and decryption. Compare a modern WireGuard design with an IPsec IKEv2 design, and identify what a VPN does not protect against.