A company uses Azure for multiple projects. The IT governance team wants to ensure that every new Azure resource within a subscription is automatically assigned a 'CostCenter' tag based on the resource group it is created in. The team does not want to rely on users manually applying the tag. They need a built-in Azure solution that enforces this rule without custom scripts. Which Azure feature should they use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
Best answer
Azure Policy with the 'Inherit a tag from the resource group if missing' effect
Correct. Azure Policy includes built-in effects (e.g., modify, append) that can automatically apply or inherit tags. The 'Inherit a tag from the resource group if missing' effect copies the resource group's tag value to resources that do not already have that tag, ensuring automatic compliance.
Distractor review
Azure Resource Graph
Incorrect. Azure Resource Graph is a query service that allows you to explore and discover resources across subscriptions. It can report on which resources are missing tags, but it cannot automatically apply or enforce tag inheritance. It is a read-only tool.
Distractor review
Azure Management Groups
Incorrect. Management Groups provide a hierarchical structure for organizing subscriptions and applying policies or RBAC at scale. However, they do not directly perform tag inheritance. The actual tag inheritance is achieved by assigning an Azure Policy definition to a management group or subscription scope; the management group itself is not the enforcement mechanism.
Distractor review
Azure Tags (manual tagging feature)
Incorrect. While Azure Tags are key-value pairs used for metadata and cost tracking, the manual tagging feature only allows users to apply tags manually or via scripts. It does not automatically inherit tags from the resource group. The governance team needs an automated enforcement tool, which is Azure Policy.
Common exam trap
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.
Technical deep dive
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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer is building a serverless application that requires integration with an on-premises SQL Server database for real-time data processing. The on-premises network is connected to Azure via a site-to-site VPN. Which Azure service would allow the function to securely access the on-premises database without exposing it to the public internet?
Question 2
A solutions architect is designing a storage solution for a large media company. The company needs to store video files that are accessed infrequently but must be retained for several years for compliance. Which two Azure storage options meet these requirements? (Select two.)
Question 3
A company deploys a multi-tier application using Azure virtual machines. The web tier VMs must be evenly distributed across two distinct data centers within an Azure region to avoid a single point of failure from an infrastructure outage. Which Azure construct should they use to meet this requirement?
Question 4
A company wants to enforce a set of security policies across all their Azure subscriptions. They have created several individual policy definitions. Which Azure construct should they use to group these policies together and assign them as a single package?
Question 5
A company deploys a line-of-business application on an Azure virtual machine. The IT team wants to ensure the application remains secure. According to the shared responsibility model, which of the following security tasks is the sole responsibility of the customer (the company)?
Question 6
A company develops a web API that runs on Azure App Service. The development team wants to deploy a new version of the API to a staging environment, run integration tests against it, and then gradually shift production traffic to the new version. If any issues are detected, they want to immediately roll back to the previous version without redeploying. Which Azure App Service feature should the team use to meet these requirements?
FAQ
Questions learners often ask
What does this AZ-900 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Azure Policy with the 'Inherit a tag from the resource group if missing' effect — Azure Policy can enforce governance rules at scale. Specifically, the built-in policy 'Inherit a tag from the resource group if missing' (effect: modify) automatically copies the value of a specified tag from the resource group to any new or updated resource that lacks that tag. This eliminates manual tagging and ensures consistent cost allocation across all resources. Azure Policy evaluates and remediates compliance automatically.
What should I do if I get this AZ-900 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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