Question 1,066 of 2,015

Cisco DNA Center →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is that the engineer did not run the Provision workflow to push the configuration to the devices. In Cisco DNA Center, creating a network profile with a VLAN definition and assigning it to a site only defines the intended configuration; it does not automatically apply it to the switches. The Provision workflow is the critical step that pushes the site’s settings—including the new VLAN—down to the managed devices, and without executing it, the VLAN will not be created. On the ENCOR 350-401 exam, this question tests your understanding of the separation between intent-based design (profiles and sites) and the actual deployment phase (provisioning). A common trap is assuming that assigning a profile to a site is enough, but DNA Center requires an explicit provisioning action to enforce the configuration. Remember: Profile + Site = Intent; Provision = Action.

350-401 Cisco DNA Center Practice Question

This 350-401 practice question tests your understanding of cisco dna center. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A network engineer is using Cisco DNA Center to automate the deployment of a new VLAN across multiple access switches. The engineer creates a new network profile with the VLAN definition and assigns it to a site. However, after provisioning, the VLAN is not created on any of the switches. The engineer verifies that the devices are in the Inventory and are reachable. What is the most likely cause?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

Question 1mediummultiple choice

Open the full VLAN trunking answer →

A
The engineer did not run the Provision workflow to push the configuration to the devices.
Correct because creating a profile and assigning it to a site only defines the intent; the actual configuration is pushed only when the Provision workflow is executed.
B
The VLAN ID conflicts with an existing VLAN on the switches.
Why wrong: Incorrect because DNA Center would report a conflict during provisioning, but the VLAN was never created, indicating the configuration was not pushed.
C
The switches do not support the VLAN ID range.
Why wrong: Incorrect because most switches support standard VLAN IDs (1-4094); the issue is the lack of provisioning, not a hardware limitation.
D
The DNA Center appliance is not licensed for the Automation module.
Why wrong: Incorrect because licensing affects feature availability, but the engineer was able to create a profile and assign it to a site, indicating Automation is available.

Full breakdown with real-world 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

✓

The engineer did not run the Provision workflow to push the configuration to the devices.

In Cisco DNA Center, network profiles are used to define settings, but they must be applied to a site and then the devices must be provisioned with that site's settings. If the engineer only created the profile and assigned it to a site, but did not run the provisioning workflow (which pushes the configuration to devices), the VLAN will not be created.

Key principle: A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.

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 engineer did not run the Provision workflow to push the configuration to the devices.
Why this is correct
Correct because creating a profile and assigning it to a site only defines the intent; the actual configuration is pushed only when the Provision workflow is executed.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Access ports place end devices into a single VLAN.
✗
The VLAN ID conflicts with an existing VLAN on the switches.
Why it's wrong here
Incorrect because DNA Center would report a conflict during provisioning, but the VLAN was never created, indicating the configuration was not pushed.
✗
The switches do not support the VLAN ID range.
Why it's wrong here
Incorrect because most switches support standard VLAN IDs (1-4094); the issue is the lack of provisioning, not a hardware limitation.
✗
The DNA Center appliance is not licensed for the Automation module.
Why it's wrong here
Incorrect because licensing affects feature availability, but the engineer was able to create a profile and assign it to a site, indicating Automation is available.

Common exam traps

Common exam trap: an active trunk can still block the VLAN you need

A trunk being up does not prove every VLAN is crossing it. Check allowed VLAN lists, native VLAN mismatch, VLAN existence and access-port assignment.

Detailed technical explanation

How to think about this question

VLAN questions usually combine access-port and trunking clues. The key is to identify whether the issue is local to one switchport, caused by the trunk, or caused by the VLAN not existing where it needs to exist.

KKey Concepts to Remember

Access ports place end devices into a single VLAN.
Trunk ports carry multiple VLANs between switches.
Allowed VLAN lists decide which VLANs can cross a trunk.
Native VLAN mismatch can create confusing symptoms.

TExam Day Tips

Use show vlan brief to verify access VLANs.
Use show interfaces trunk to verify trunk state and allowed VLANs.
Do not treat every same-VLAN issue as a routing problem.

Key takeaway

A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.

Real-world example

How this comes up in practice

A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.

What to study next

Got this wrong? Here's your next step.

Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related 350-401 questions on switching, trunking, and access-port configuration.

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FAQ

Questions learners often ask

What does this 350-401 question test?

Cisco DNA Center — This question tests Cisco DNA Center — Access ports place end devices into a single VLAN..

What is the correct answer to this question?

The correct answer is: The engineer did not run the Provision workflow to push the configuration to the devices. — In Cisco DNA Center, network profiles are used to define settings, but they must be applied to a site and then the devices must be provisioned with that site's settings. If the engineer only created the profile and assigned it to a site, but did not run the provisioning workflow (which pushes the configuration to devices), the VLAN will not be created.

What should I do if I get this 350-401 question wrong?

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Access ports place end devices into a single VLAN.

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