350-601 Network Practice Question
An engineer is implementing VXLAN in a data center. The network must handle BUM traffic without relying on IP multicast in the underlay. Which BUM handling method should be chosen?
⚠ Common exam trap
Cisco often tests the distinction between 'ingress replication' and 'head-end replication'—while they are functionally similar, the exam expects 'Ingress replication' as the correct Cisco term for unicast-only BUM handling, and 'Head-end replication' is a distractor that may confuse candidates into thinking it is a different method.
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
✓
Ingress replication
In VXLAN environments that must avoid IP multicast in the underlay, ingress replication is the correct BUM handling method. It replicates broadcast, unknown unicast, and multicast (BUM) traffic at the ingress VTEP and sends a copy to each remote VTEP via unicast encapsulation, eliminating the need for multicast group membership in the underlay.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ARP suppression
Why it's wrong here
ARP suppression reduces ARP broadcasts but does not handle all BUM traffic.
- ✗
Head-end replication
Why it's wrong here
Head-end replication is a term sometimes used synonymously with ingress replication, but it is not a standard Cisco term for VXLAN BUM handling.
- ✗
Multicast group
Why it's wrong here
Multicast requires multicast routing in the underlay.
- ✓
Ingress replication
Why this is correct
Ingress replication uses unicast tunnels to replicate BUM traffic, no multicast needed.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.