350-601 Network Practice Question
In ACI, which construct defines the set of endpoints that can communicate based on contracts?
⚠ Common exam trap
Cisco often tests the distinction between EPGs and Bridge Domains, where candidates mistakenly think a Bridge Domain defines endpoint communication because it handles Layer 2 forwarding, but contracts are applied at the EPG level, not the Bridge Domain level.
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
✓
EPG
In Cisco ACI, an Endpoint Group (EPG) is the logical grouping of endpoints (such as servers, VMs, or storage) that share the same policy requirements. Contracts define the rules for communication between EPGs, specifying which EPGs can talk to each other and what services (e.g., HTTP, SSH) are allowed. Thus, the EPG construct directly defines the set of endpoints that can communicate based on contracts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
VRF
Why it's wrong here
A VRF provides Layer 3 isolation.
- ✗
Bridge Domain
Why it's wrong here
A BD defines a Layer 2 forwarding domain and subnet.
- ✗
Tenant
Why it's wrong here
A tenant is a logical container for policies.
- ✓
EPG
Why this is correct
EPGs are the policy enforcement boundary.
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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.