JNCIP-SP: Juniper Networks Certified Professional – Service Provider (2023) — Question 14

Which two statements are correct about VPLS tunnels? (Choose two.)

Answer options

• A. BGP-signaled VPLS tunnels require manual provisioning of sites.
• B. LDP-signaled VPLS tunnels only support control bit 0.
• C. LDP-signaled VPLS tunnels use auto-discovery to provision sites.
• D. BGP-signaled VPLS tunnels can use either RSVP or LDP between the PE routers.

Correct answer: B, D

Explanation

The correct answers are B and D. Option B is true because LDP-signaled VPLS tunnels only support control bit 0. Option D is correct as BGP-signaled VPLS tunnels can indeed use either RSVP or LDP between the Provider Edge (PE) routers. Options A and C are incorrect because BGP-signaled VPLS tunnels do not require manual provisioning, and LDP-signaled VPLS tunnels do not use auto-discovery.