Palo Alto Networks (PANW) Certified Cybersecurity Entry-level Technician (PCCET) Practice Exam

Which tunneling protocol can you use to connect two Ethernet segments into one?

1. PPP

2. L2TP

3. IPsec (without L2TP)

4. SLIP

The correct answer is: L2TP

The tunneling protocol that allows you to connect two Ethernet segments into one is L2TP (Layer 2 Tunneling Protocol). L2TP operates at the data link layer and is designed to support the tunneling of various types of traffic over a variety of network protocols. Unlike PPP (Point-to-Point Protocol) and SLIP (Serial Line Internet Protocol), which are more suited for point-to-point connections, L2TP can encapsulate Ethernet frames and support the transport of data across different network segments while maintaining the data link layer properties. L2TP typically works in conjunction with protocols like IPsec to provide security for the transmitted data, but it is specifically focused on the layer 2 aspect of networking, making it an ideal choice for connecting Ethernet segments, allowing devices on different segments to communicate as if they were on the same local network. By utilizing L2TP, it effectively extends the local area network (LAN) environment across larger geographical distances, making it useful for organizations with multiple locations needing to integrate their networks seamlessly.