JNCIP-SP: Juniper Networks Certified Professional – Service Provider (2022) — Question 64

Why do interprovider option B VPNs scale better than interprovider option A VPNs?

Answer options

• A. The ASBRs in interprovider option B VPNs do not need per-VPN VRF tables.
• B. The ASBRs in interprovider option A VPNs do not need per-VPN VRF tables.
• C. The ASBRs in interprovider option A VPNs only carry internal routes.
• D. The ASBRs in interprovider option B VPNs only carry internal routes.

Correct answer: A

Explanation

Interprovider option B VPNs scale better because the ASBRs do not have to maintain per-VPN VRF tables, which reduces complexity and resource usage. In contrast, option A requires these tables, leading to increased overhead. Options C and D are irrelevant to the question of scalability as they focus on route types rather than the management of VPNs.