JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing (2022) — Question 60

In which situation would you disable penultimate-hop popping?

Answer options

• A. When you want to bypass a penultimate router that does not support IPv6 tunneling
• B. When you want to ensure the penultimate router can perform the destination route lookup
• C. When you want to enforce the same class-of-service behavior through the entire LSP
• D. When you want to utilize a penultimate router that supports IPv6 tunneling

Correct answer: C

Explanation

Disabling penultimate-hop popping ensures that the same class-of-service policies are applied throughout the entire Label Switched Path (LSP), which is crucial for maintaining consistent performance. The other options either focus on bypassing routers or capabilities that do not directly relate to class-of-service enforcement.