Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company wants to enforce a governance policy that only allows virtual machines of the SKU 'Standard_DS2_v2' to be deployed in their Azure subscription. If a user attempts to create a virtual machine with a different SKU (e.g., 'Standard_D2s_v3'), the deployment must be immediately rejected with an error, and the resource must not be created. Which Azure Policy effect should the team use to implement this requirement?
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.
A
Best answer
Deny
Correct. The Deny effect blocks resource creation or update if the policy condition is not met, which is exactly what is needed to prevent deployment of non-approved VM sizes.
B
Distractor review
Append
Incorrect. The Append effect adds additional fields (such as tags) to a resource during creation or update, but it does not block the creation of a resource that violates the policy. It would not reject a VM with a wrong SKU.
C
Distractor review
Audit
Incorrect. The Audit effect creates a compliance event in the activity log when a non-compliant resource is created or updated, but it allows the deployment to succeed. Since the requirement is to block the deployment entirely, Audit does not meet the need.
D
Distractor review
DeployIfNotExists
Incorrect. The DeployIfNotExists effect is used to deploy a resource (e.g., a monitoring agent) to a virtual machine that does not have it. It does not block the creation of the VM itself, and thus cannot prevent a non-approved SKU from being deployed.
Common exam trap
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Technical deep dive
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
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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?
Standard ACLs match source addresses.
What is the correct answer to this question?
The correct answer is: Deny — The 'Deny' effect in Azure Policy blocks the deployment of a resource that does not comply with the policy definition. When a policy with the Deny effect is assigned, any ARM template, Azure CLI, portal, or other method to create a resource that violates the rule (e.g., a virtual machine with a non-approved SKU) will be rejected with an error. For this scenario, the Deny effect is the correct choice because it actively prevents the creation of non-compliant VMs. The other effects are not suitable: 'Append' only adds additional properties (like tags) but does not block deployments; 'Audit' only logs the violation and creates a compliance event but allows the deployment to succeed; 'DeployIfNotExists' ensures a resource (like an agent) is deployed, but does not block creation of the violating resource itself.
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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