AZ-400 Design and implement a DevOps infrastructure Practice Question
This AZ-400 practice question tests your understanding of design and implement a devops infrastructure. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The deployment is denied because the SKU matches the pattern.
The policy definition uses a deny effect when the VM type is Microsoft.Compute/virtualMachines and the SKU name starts with 'Standard_D'. Since Standard_D2s_v3 matches that pattern, the deployment is denied.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 deployment is denied only if the VM is in a specific resource group.
Why it's wrong here
Incorrect. The policy does not filter by resource group.
✓
The deployment is denied because the SKU matches the pattern.
Why this is correct
Correct. The condition matches VM type and SKU name starting with 'Standard_D', so the deny effect blocks the deployment.
Related concept
Static NAT maps one inside address to one outside address.
✗
The deployment is allowed because the SKU matches the pattern.
Why it's wrong here
Incorrect. The policy denies deployments that match the condition.
✗
The deployment is allowed and a non-compliance event is logged.
Why it's wrong here
Incorrect. The deny effect prevents the deployment entirely.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-400 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-400 NAT questions on configuration and troubleshooting.
Design and implement a DevOps infrastructure — This question tests Design and implement a DevOps infrastructure — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The deployment is denied because the SKU matches the pattern. — The policy definition uses a deny effect when the VM type is Microsoft.Compute/virtualMachines and the SKU name starts with 'Standard_D'. Since Standard_D2s_v3 matches that pattern, the deployment is denied.
What should I do if I get this AZ-400 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-400 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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