350-601 Network Practice Question
In the context of ACI L3Out, which object is used to advertise external networks into the ACI fabric and is associated with a VRF?
⚠ Common exam trap
Cisco often tests the misconception that an External EPG is the object associated with the VRF for route advertisement, but in reality, the L3Out is the parent object that holds the VRF association and controls the routing protocols.
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
✓
L3Out
In ACI, an L3Out is the logical construct that provides connectivity from the ACI fabric to external Layer 3 networks. It is associated with a VRF to define the routing context, and it is the object under which external networks are advertised into the fabric via route redistribution or static routes. The L3Out contains the external EPGs and the protocol profiles (e.g., OSPF, BGP, EIGRP) that control the advertisement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Bridge Domain
Why it's wrong here
BD is for internal L2, not external.
- ✓
L3Out
Why this is correct
L3Out defines the external connectivity and routing protocol.
- ✗
Contract
Why it's wrong here
Contract is for policy between EPGs, not external routing.
- ✗
External EPG
Why it's wrong here
External EPG is part of L3Out but not the object that advertises networks.
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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.