350-501 Networking Practice Question
Which technology allows an IPv6-only customer edge router to connect to an MPLS provider edge router using IPv4 transport, encapsulating IPv6 packets in MPLS with a labeled IPv4 next-hop?
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
✓
6PE
6PE (IPv6 Provider Edge) uses MP-BGP to exchange IPv6 prefixes with IPv4 next-hop addresses over MPLS. It does not require IPv6 in the core.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
6VPE
Why it's wrong here
6VPE provides L3VPN for IPv6 with VRF.
- ✗
NAT64
Why it's wrong here
NAT64 translates IPv6 to IPv4.
- ✗
MAP-T
Why it's wrong here
MAP-T is for IPv4 over IPv6 encapsulation.
- ✓
6PE
Why this is correct
6PE provides IPv6 over MPLS with IPv4 next-hop.
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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.