350-601 Network Practice Question
In an ACI fabric, a tenant is configured with multiple bridge domains (BDs) and EPGs. Which three statements correctly describe the ACI model? (Choose three.)
⚠ Common exam trap
Cisco often tests the misconception that EPGs can communicate freely without contracts, but the correct ACI model requires contracts for any inter-EPG traffic, even within the same bridge domain.
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
✓
Contracts are applied between EPGs to allow communication.
In ACI, contracts are the mechanism used to enable communication between EPGs. By default, all traffic is denied, and a contract must be explicitly applied to allow traffic flow between EPGs, enforcing a zero-trust model.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Contracts are applied between EPGs to allow communication.
Why this is correct
Correct. Contracts define allowed traffic directions and filters.
- ✓
A VRF is equivalent to a Layer 3 domain within a tenant.
Why this is correct
Correct. VRF provides Layer 3 isolation.
- ✗
EPGs can communicate with each other without any contract.
Why it's wrong here
By default, EPGs are isolated; contracts are required.
- ✓
An EPG belongs to a single bridge domain.
Why this is correct
Correct. Each EPG is associated with one BD.
- ✗
L3Out is used to connect the ACI fabric to external Layer 2 networks.
Why it's wrong here
L3Out is for Layer 3 external connectivity.
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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.