The correct answer is that you must first create the user-assigned managed identity as a standalone Azure resource, and then assign that identity to your App Service web app. This two-step process is required because a user-assigned managed identity is an independent identity resource in Microsoft Entra ID, not a property of the web app itself; it must exist before it can be associated with any Azure service. On the AZ-204 exam, this tests your understanding of managed identity lifecycle and the distinction between system-assigned and user-assigned identities—a common trap is assuming you can enable a user-assigned identity directly from the web app blade without first creating the identity resource. To remember, think of it like a keycard: you must create the keycard (the identity) before you can assign it to a door (the web app).
AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute solutions. 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.
Which TWO actions should you take to enable a user-assigned managed identity for an Azure App Service web app?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create the managed identity resource in Microsoft Entra ID.
Option A is correct because a user-assigned managed identity is a standalone Azure resource created in Microsoft Entra ID (formerly Azure AD). It must exist as an identity resource before it can be assigned to any Azure service, including an App Service web app. This identity is then tied to a specific tenant and can be used by multiple Azure resources.
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.
✓
Create the managed identity resource in Microsoft Entra ID.
Why this is correct
User-assigned managed identities are created as Azure resources.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure the identity in each deployment slot separately.
Why it's wrong here
The identity is assigned to the entire app, not per slot.
✗
Store the identity's client ID in an app setting.
Why it's wrong here
The identity is automatically available; no manual storing needed.
✗
Create the managed identity in the same resource group as the web app.
Why it's wrong here
The identity can be created in any resource group; it's not restricted to the app's resource group.
✓
Assign the identity to the web app in the Azure portal or CLI.
Why this is correct
Assignment links the identity to the app service.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse user-assigned managed identities with system-assigned managed identities, assuming the identity must be created in the same resource group as the web app or that its client ID must be manually stored in an app setting, when in fact user-assigned identities are independent resources that can be created anywhere and are automatically discoverable by the consuming service.
Detailed technical explanation
How to think about this question
Under the hood, when you assign a user-assigned managed identity to an App Service, Azure automatically sets the `identity` property in the site's resource model to reference the identity's resource ID. The App Service runtime then uses the managed identity's client ID and certificate (rotated automatically) to obtain tokens from Microsoft Entra ID via the IMDS endpoint at `http://169.254.169.254/metadata/identity/oauth2/token`. This token can be used to authenticate to Azure services like Key Vault or Storage without storing any secrets in code or configuration.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
Develop Azure compute solutions — This question tests Develop Azure compute solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create the managed identity resource in Microsoft Entra ID. — Option A is correct because a user-assigned managed identity is a standalone Azure resource created in Microsoft Entra ID (formerly Azure AD). It must exist as an identity resource before it can be assigned to any Azure service, including an App Service web app. This identity is then tied to a specific tenant and can be used by multiple Azure resources.
What should I do if I get this AZ-204 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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