350-501 MPLS and Segment Routing Practice Question
Which THREE are EVPN multi-homing functions? (Choose three.)
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
✓
Ethernet Segment Identifier (ESI) uniquely identifies the multi-homed segment.
EVPN multi-homing uses ESI for identification, DF election to avoid duplicate frames, and aliasing for load balancing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Ethernet Segment Identifier (ESI) uniquely identifies the multi-homed segment.
Why this is correct
ESI is key for multi-homing.
- ✗
Split horizon prevents loops among PEs.
Why it's wrong here
Split horizon is a general principle, not specific to multi-homing.
- ✗
MAC mobility provides MAC address move detection.
Why it's wrong here
MAC mobility is a feature but not a multi-homing function.
- ✓
Designated Forwarder (DF) election ensures only one PE forwards broadcast traffic.
Why this is correct
DF election prevents loops.
- ✓
Aliasing allows a PE to advertise all MAC addresses from a segment even if not attached.
Why this is correct
Aliasing enables load balancing.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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