JNCIP-ENT EVPN Practice Question
Which THREE actions occur during the EVPN Designated Forwarder (DF) election process on a multi-homed Ethernet segment? (Choose three)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A Designated Forwarder is elected to forward BUM traffic from the core to the multi-homed site.
DF election uses Route Type 4 (Ethernet Segment routes) to exchange reachability, determines the forwarder based on preference and algorithms, and assigns responsibility for BUM traffic forwarding.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A Designated Forwarder is elected to forward BUM traffic from the core to the multi-homed site.
Why this is correct
The DF is responsible for sending BUM traffic down to the attached customer site.
- ✗
All participating PEs simultaneously forward BUM traffic to maximize bandwidth utilization.
Why it's wrong here
Simultaneous BUM forwarding by multiple PEs would cause traffic duplication; only the DF forwards BUM traffic.
- ✓
Segment preference values and IP addresses are evaluated to determine the forwarding role deterministically.
Why this is correct
The DF algorithm uses configured segment preferences and router IPs as tie-breakers.
- ✗
MAC mobility sequence numbers are reset to zero during the election.
Why it's wrong here
MAC mobility sequence numbers are unaffected by DF elections.
- ✓
PE routers exchange Route Type 4 (Ethernet Segment Routes) to discover peers attached to the same segment.
Why this is correct
Type 4 routes advertise ESI reachability and enable PEs to discover each other on the same segment.
About these practice questions
Courseiva writes every JNCIP-ENT question from scratch — 332 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Juniper Networks exam blueprint
This JNCIP-ENT practice question is part of Courseiva's free Juniper Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the JNCIP-ENT exam.