350-501 Networking Practice Question
A service provider wants to provide IPv6 connectivity over an MPLS IPv4 core using 6PE. Which BGP extension is required on the provider edge routers?
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
✓
IPv6 address family with next-hop encoded as an IPv4-mapped IPv6 address
6PE uses MP-BGP with the IPv6 address family and an IPv4 next-hop (the PE's IPv4 address), encoded via the IPv4-mapped IPv6 address format.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Labeled unicast IPv4 address family
Why it's wrong here
Not used for 6PE.
- ✗
VPNv4 address family with route-target extended community
Why it's wrong here
That's for MPLS L3VPN.
- ✓
IPv6 address family with next-hop encoded as an IPv4-mapped IPv6 address
Why this is correct
This allows IPv4 next-hop in IPv6 AF.
- ✗
IPv6 address family with next-hop encoded as an IPv6 address
Why it's wrong here
6PE uses IPv4 next-hop.
Go deeper
Related to this question
About these practice questions
One of 971 original 350-501 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-501 practice question is part of Courseiva's free Cisco 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 350-501 exam.