JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2024) — Question 5

Which statement is true about IP-IP tunnels?

Answer options

• A. Intermediate devices must have a route to the destination address of the traffic being tunneled.
• B. Intermediate devices must have a route to both the tunnel source address and the tunnel destination address.
• C. Intermediate devices must have a route to the tunnel destination address but do not require a route to the tunnel source address.
• D. Intermediate devices must have a route to the tunnel source address but do not require a route to the tunnel destination address.

Correct answer: C

Explanation

Option C is correct because intermediate devices only need to know how to route to the destination address of the tunneled traffic, not the source. Options A, B, and D are incorrect as they imply that routes to either the source or both addresses are necessary, which is not a requirement for IP-IP tunneling.