- A
The ingress VTEP learns remote VTEPs via IGMP snooping.
Why wrong: IGMP snooping is used for multicast group membership, not for ingress replication lists.
- B
The egress VTEP sends unicast copies to all other VTEPs.
Why wrong: Ingress replication is done by the ingress VTEP, not egress.
- C
The ingress VTEP learns remote VTEPs via MP-BGP EVPN Type 3 routes.
Type 3 routes advertise VNI and VTEP IP, enabling ingress replication list.
- D
The spine switch performs replication to all leaf VTEPs.
Why wrong: In ingress replication, the leaf (ingress VTEP) replicates; spine does not.
Question 343 of 1,000
350-601 Network Practice Question
This 350-601 practice question tests your understanding of network. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
In a VXLAN BGP EVPN fabric, which component is responsible for handling BUM traffic using ingress replication, and how does the VTEP learn the list of remote VTEPs to replicate to?
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
✓
The ingress VTEP learns remote VTEPs via MP-BGP EVPN Type 3 routes.
In a VXLAN BGP EVPN fabric, ingress replication is the default method for handling BUM traffic, where the ingress VTEP replicates packets and sends unicast copies to each remote VTEP. The ingress VTEP learns the list of remote VTEPs from MP-BGP EVPN Type 3 routes (Inclusive Multicast routes), which advertise the VNI and the originating VTEP's IP address, allowing the ingress VTEP to build its replication list.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The ingress VTEP learns remote VTEPs via IGMP snooping.
Why it's wrong here
IGMP snooping is used for multicast group membership, not for ingress replication lists.
- ✗
The egress VTEP sends unicast copies to all other VTEPs.
Why it's wrong here
Ingress replication is done by the ingress VTEP, not egress.
- ✓
The ingress VTEP learns remote VTEPs via MP-BGP EVPN Type 3 routes.
Why this is correct
Type 3 routes advertise VNI and VTEP IP, enabling ingress replication list.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The spine switch performs replication to all leaf VTEPs.
Why it's wrong here
In ingress replication, the leaf (ingress VTEP) replicates; spine does not.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that the spine switch performs replication or that IGMP snooping is used for VTEP discovery, when in fact the ingress VTEP uses MP-BGP EVPN Type 3 routes to learn remote VTEPs and handle BUM traffic via ingress replication.
Detailed technical explanation
How to think about this question
Under the hood, MP-BGP EVPN Type 3 routes carry the Route Distinguisher (RD), VNI, and the originating VTEP's IP address, enabling each VTEP to dynamically build a list of remote VTEPs for a given VNI. Ingress replication is simpler than multicast-based replication (e.g., PIM) and is the default in Cisco ACI and NX-OS EVPN deployments, but it can lead to higher bandwidth usage on the ingress VTEP as traffic is replicated per remote VTEP. A real-world scenario where this matters is in large fabrics with many VTEPs, where ingress replication may cause CPU and bandwidth strain, prompting operators to consider head-end replication or multicast-assisted replication.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 350-601 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Questions learners often ask
What does this 350-601 question test?
Network — This question tests Network — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The ingress VTEP learns remote VTEPs via MP-BGP EVPN Type 3 routes. — In a VXLAN BGP EVPN fabric, ingress replication is the default method for handling BUM traffic, where the ingress VTEP replicates packets and sends unicast copies to each remote VTEP. The ingress VTEP learns the list of remote VTEPs from MP-BGP EVPN Type 3 routes (Inclusive Multicast routes), which advertise the VNI and the originating VTEP's IP address, allowing the ingress VTEP to build its replication list.
What should I do if I get this 350-601 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This 350-601 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 350-601 exam.
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