350-601 Security Practice Question
Which TWO of the following are required components for a Cisco ACI contract to allow communication between EPGs?
⚠ Common exam trap
Cisco often tests the misconception that a tenant or VRF is a required component of a contract, when in fact the contract only requires a filter and a subject to define the traffic rules, while tenants and VRFs are separate constructs that provide logical isolation and routing context.
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
✓
A filter that specifies the traffic parameters.
A filter in Cisco ACI defines the specific traffic parameters—such as IP protocol, source/destination ports, and EtherType—that are permitted or denied between EPGs. Without a filter, the contract has no criteria to match traffic, so communication cannot be allowed. Option B is correct because a subject binds one or more filters to a contract and specifies the direction (consumer-to-provider or bidirectional) in which the filter is applied, making it an essential component for the contract to function.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A filter that specifies the traffic parameters.
Why this is correct
Filter defines allowed traffic.
- ✓
A subject that defines the filter.
Why this is correct
The subject links the contract to a filter.
- ✗
A tenant.
Why it's wrong here
Tenant is a container, not a direct component of a contract.
- ✗
A QoS class.
Why it's wrong here
QoS is optional.
- ✗
A VRF.
Why it's wrong here
VRF is for reachability, not part of contract.
Visual reference
Go deeper
Related to this question
About these practice questions
Courseiva writes every 350-601 question from scratch — 984 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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.