350-501 Architecture Practice Question
In an MPLS VPN environment, which address family is used to exchange VPNv4 routes between PE routers?
⚠ Common exam trap
Cisco often tests the distinction between the address family used for route exchange (VPNv4 unicast) and the community attribute (Route Target) that controls route distribution, leading candidates to mistakenly select Route-target as the answer.
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
✓
VPNv4 unicast
In an MPLS VPN environment, VPNv4 routes (which include both the IPv4 prefix and the Route Distinguisher) are exchanged between Provider Edge (PE) routers using the VPNv4 unicast address family under the BGP configuration. This address family allows PE routers to carry customer routes with unique RD values, enabling address overlap across different VPNs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Route-target (RT)
Why it's wrong here
RT is an extended community used for filtering, not an address family.
- ✗
IPv4 unicast
Why it's wrong here
IPv4 unicast does not carry VPN labels or route distinguishers.
- ✗
VPNv6 unicast
Why it's wrong here
VPNv6 is for IPv6 VPN routes.
- ✓
VPNv4 unicast
Why this is correct
VPNv4 carries both IPv4 prefixes and route distinguishers.
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.