The answer is to enable a managed identity for the App Service and then grant that identity permission to read the required secrets from Key Vault. This two-step process works because a managed identity provides an automatically managed Azure AD identity for the web app, eliminating the need to store credentials in code or configuration. By enabling a system-assigned or user-assigned managed identity, the App Service can authenticate to Azure Key Vault without any connection strings or secrets in app settings, which is the foundational step for secure, identity-based access. On the AZ-204 exam, this scenario tests your understanding of identity-based authentication versus secret-based configuration; a common trap is to think you still need a connection string in app settings, but the whole point of managed identity is to avoid that. Memory tip: think "Enable then Grant" — first give the app an identity, then give that identity the Key Vault read role.
AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute solutions. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
A document rendering job in Azure App Service must safely access Key Vault secrets without connection strings in configuration. Which two steps are required?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable a managed identity for the web app
A managed identity provides an automatically managed Azure AD identity for the web app, eliminating the need to store credentials in code or configuration. By enabling a system-assigned or user-assigned managed identity, the App Service can authenticate to Azure Key Vault without any connection strings or secrets in app settings. This is the foundational step for secure, identity-based access to Key Vault.
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.
✓
Enable a managed identity for the web app
Why this is correct
A managed identity gives the app an Azure AD identity without stored credentials.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable anonymous access on the vault
Why it's wrong here
Anonymous access is not allowed and would be insecure.
✓
Grant the identity permission to read the required secrets
Why this is correct
The identity must be authorized on Key Vault through RBAC or access policies.
Related concept
Read the scenario before looking for a memorised answer.
✗
Store the Key Vault access key in app settings
Why it's wrong here
Key Vault does not use access keys, and storing credentials defeats the purpose.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates might think storing the Key Vault access key in app settings (Option D) is acceptable because it's 'in the portal,' but the question explicitly requires 'without connection strings in configuration,' and any key stored in app settings is still a connection string in configuration.
Detailed technical explanation
How to think about this question
Under the hood, the managed identity is represented as a service principal in Azure AD, and the App Service runtime automatically obtains an access token from the Azure Instance Metadata Service (IMDS) endpoint at 169.254.169.254. This token is then presented to Key Vault via the OAuth 2.0 Bearer token flow, and Key Vault validates the token against the vault's access policies. A subtle behavior is that the token is cached and automatically refreshed by the Azure SDK, so no manual token management is needed in application code.
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: Enable a managed identity for the web app — A managed identity provides an automatically managed Azure AD identity for the web app, eliminating the need to store credentials in code or configuration. By enabling a system-assigned or user-assigned managed identity, the App Service can authenticate to Azure Key Vault without any connection strings or secrets in app settings. This is the foundational step for secure, identity-based access to Key Vault.
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.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A report export service in Azure App Service must safely access Key Vault secrets without connection strings in configuration. Which two steps are required?
hard
A.Enable anonymous access on the vault
B.Store the Key Vault access key in app settings
✓ C.Grant the identity permission to read the required secrets
✓ D.Enable a managed identity for the web app
Why C: Option C is correct because granting the managed identity permission to read secrets in Key Vault via Azure RBAC or access policies ensures that the App Service can authenticate without storing any secrets in configuration. This follows the principle of least privilege and eliminates the risk of credential leakage from app settings or connection strings.
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Question Discussion
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