Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company has a critical Azure resource group that contains all production virtual machines and databases. The IT security administrator wants to ensure that no user, including members of the 'Owner' role, can accidentally or intentionally delete this resource group. The solution must not prevent modification of resources inside the resource group. The administrator needs to apply a governance control at the resource group level. What should the administrator do?
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
Distractor review
Apply a 'ReadOnly' lock on the resource group.
A 'ReadOnly' lock prevents any modifications, including updates and deletions. This is too restrictive because the requirement is to allow modifications to the resources while only blocking deletion.
B
Best answer
Apply a 'CanNotDelete' lock on the resource group.
A 'CanNotDelete' lock allows read and update operations but blocks delete operations on the resource group. This lock applies to all users, including those with the Owner role, making it the correct governance control to prevent accidental or intentional deletion while allowing modifications.
C
Distractor review
Assign a custom RBAC role that denies delete actions at the resource group scope.
While a custom RBAC role can deny delete actions, it is not a foolproof governance control. Users with elevated roles (such as Owner) might override the deny assignment, or the assignment could be changed by other administrators. Azure Resource Locks provide a stronger enforcement that overrides RBAC permissions.
D
Distractor review
Move the resource group to a separate subscription with billing separation.
Moving the resource group to a different subscription does not inherently prevent deletion. Users with administrative access to that subscription could still delete the resource group. This action does not provide the required protection against deletion.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
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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?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Apply a 'CanNotDelete' lock on the resource group. — Azure Resource Locks are a governance feature that can be applied to a subscription, resource group, or individual resource to prevent accidental deletion or modification. There are two types of locks: 'CanNotDelete' and 'ReadOnly'. A 'CanNotDelete' lock allows all operations except delete. This lock takes precedence over any RBAC permissions, meaning even users with the Owner role cannot delete the resource group. This meets the requirement of preventing deletion while allowing modifications. A 'ReadOnly' lock would also block modifications, which is not desired. Custom RBAC roles can be bypassed by users with elevated permissions and are not designed as a hard barrier. Moving the resource group to another subscription does not inherently prevent deletion by authorized users within that subscription.
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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