The answer is to manually correct the overlapping subnets in the template and re-run the deployment script. This is correct because the NDO template validation failure is directly caused by conflicting IP subnet definitions within the template—two VLANs are trying to claim the same address space, which violates the fundamental networking principle of unique subnet allocation. On the Cisco DCCOR 350-601 exam, this scenario tests your understanding of NDO template deployment workflows and common automation pitfalls; the trap is that candidates often look for complex API fixes or script modifications when the root cause is a simple data error in the template itself. The engineer must resolve the overlapping IP subnets at the source before deployment, as NDO’s validation engine will reject any template with conflicting ranges to prevent network instability across the fabric. Memory tip: “Fix the data, not the code”—if validation fails, always check your subnet definitions first before touching the automation script.
350-601 Automation Practice Question
This 350-601 practice question tests your understanding of automation. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 data center has 100 Nexus switches in a fabric managed by Cisco Nexus Dashboard Orchestrator (NDO). The network team needs to automate the creation of a new network template that includes multiple VLANs and VRF configurations. They want to ensure that the template is applied consistently across all leaf switches without manual intervention. The engineer writes a Python script using the NDO REST API to create the template and deploy it. However, the deployment fails with an error 'Template validation failed: overlapping IP subnets'. Upon reviewing the template, the engineer notices that two VLANs have overlapping subnet definitions. Which action should the engineer take to resolve this issue efficiently?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Manually correct the overlapping subnets in the template and re-run the deployment script
Option B is correct because the root cause of the deployment failure is overlapping IP subnets in the template definition. Manually correcting the overlapping subnets in the template and re-running the deployment script directly resolves the validation error without introducing unnecessary complexity or risk. This approach ensures the template is valid before deployment, maintaining consistency across all leaf switches.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use the NDO GUI to edit the template and then re-run the script
Why it's wrong here
Works but is less efficient than directly editing in the script.
✓
Manually correct the overlapping subnets in the template and re-run the deployment script
Why this is correct
Directly fixes the root cause; then automation can proceed.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create separate templates for each VLAN to avoid overlaps
Why it's wrong here
Does not solve the overlap; creates unnecessary complexity.
✗
Modify the Python script to ignore validation errors and force the deployment
Why it's wrong here
Ignoring validation could cause IP conflicts in the network.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the candidate's ability to distinguish between fixing the root cause (overlapping subnets) versus workarounds that bypass validation or increase complexity, testing whether you understand that automation must still adhere to network design rules.
Detailed technical explanation
How to think about this question
NDO validates templates against the intended fabric configuration before deployment, checking for conflicts such as overlapping IP subnets across VLANs or VRFs. Under the hood, NDO uses a YANG-based data model and REST API to compare the proposed template with existing network state, rejecting any configuration that violates IP address uniqueness. In a real-world scenario, overlapping subnets can cause routing black holes or ARP conflicts, making validation a critical safeguard.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Automation — This question tests Automation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Manually correct the overlapping subnets in the template and re-run the deployment script — Option B is correct because the root cause of the deployment failure is overlapping IP subnets in the template definition. Manually correcting the overlapping subnets in the template and re-running the deployment script directly resolves the validation error without introducing unnecessary complexity or risk. This approach ensures the template is valid before deployment, maintaining consistency across all leaf switches.
What should I do if I get this 350-601 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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