JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2025) — Question 2

Which protocol supports tunneling of non-IP traffic?

Answer options

• A. GRE
• B. SSH
• C. IPsec
• D. IP-IP

Correct answer: A

Explanation

GRE (Generic Routing Encapsulation) is designed to encapsulate a wide variety of network layer protocols, enabling the tunneling of non-IP traffic. In contrast, SSH (Secure Shell) and IPsec are primarily focused on securing IP traffic, while IP-IP is used specifically for encapsulating IP packets, making them unsuitable for non-IP traffic tunneling.