Differentiation between IPsec VPN and SSL/TLS VPN in terms of transport, security, and typical use cases?

• A. IPsec VPN operates at the application layer and uses TLS.
• B. IPsec VPN operates at the network/transport layer and uses ESP/AH; SSL/TLS VPN operates at the application layer, via a browser, using TLS.
• C. SSL/TLS VPN requires IPsec transport mode.
• D. IPsec VPN cannot provide site-to-site connections.

Answer: (B)