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350-401 Practice Question: Is deploying Cisco DNA Center in a brownfield…
A network engineer is deploying Cisco DNA Center in a brownfield network. The engineer wants to use DNA Center to automate the configuration of QoS policies across all access switches. After discovering the devices and adding them to Inventory, the engineer creates a QoS policy and assigns it to a site. However, when attempting to provision, DNA Center reports that the devices are in 'Compliance Error' state. What is the most likely reason?
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
✓
The devices have existing QoS configurations that conflict with the new policy.
In brownfield deployments, devices may have existing configurations that conflict with the intended policies. DNA Center performs a compliance check before provisioning. If the current device configuration does not match the intended configuration (e.g., existing QoS settings), DNA Center reports a compliance error. The engineer must either update the device configuration to match the intent or modify the intent to accommodate the existing configuration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The devices have existing QoS configurations that conflict with the new policy.
Why this is correct
Correct because DNA Center's compliance check compares the intended configuration with the actual device configuration. Conflicts cause compliance errors.
- ✗
The devices are not running a supported IOS-XE version for QoS automation.
Why it's wrong here
Incorrect while version support is important, the scenario mentions devices are discovered and in Inventory, so they are supported; the error is compliance-related.
- ✗
The DNA Center appliance does not have enough storage to process the QoS policy.
Why it's wrong here
Incorrect because storage issues would cause operational failures, not compliance errors specific to configuration conflicts.
- ✗
The QoS policy was created with an invalid DSCP value.
Why it's wrong here
Incorrect because DNA Center would validate the policy during creation; a compliance error indicates a mismatch with the device, not an invalid policy.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 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 350-401 exam.