JNCIP-DC: Juniper Networks Certified Professional – Data Center (2021) — Question 8

A customer has built a VXLAN using an EVPN signaling infrastructure with remote facilities with VXLAN using EVPN signaling connected to the Internet. The customer notices that the network is completely stable with no protocol errors in the underlay or overlay. The customer, however, cannot pass any application data across the network.
Which statement would explain the intermittent loss?

Answer options

• A. There is an LACP key mismatch.
• B. The MTU is exceeded.
• C. The routing protocol authentication has failed.
• D. The BPDU protection is invoked.

Correct answer: D

Explanation

The correct answer is D because BPDU protection, when triggered, can block ports to prevent loops, which would stop application data from passing through. Options A, B, and C do not directly relate to the inability to transmit application data across the network when the infrastructure appears stable.