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You are developing an ASP.NET Core web app that uses Azure SQL Database. The SQL connection string contains a password that must be rotated every 30 days. The app runs on Azure App Service. You want to store the connection string securely and enable automatic rotation without redeploying the app. Which approach should you use?

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You are developing an ASP.NET Core web app that uses Azure SQL Database. The SQL connection string contains a password that must be rotated every 30 days. The app runs on Azure App Service. You want to store the connection string securely and enable automatic rotation without redeploying the app. Which approach should you 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.

A

Distractor review

Store the connection string in an App Setting as a plain text value and use deployment slots to swap when the password changes.

Plain text storage violates security best practices and does not enable automatic rotation. Slot swaps require manual updates and redeployment.

B

Best answer

Store the connection string in an App Setting and use Key Vault references. Configure a Key Vault policy to automatically rotate the secret.

This approach uses a Key Vault reference in the App Setting, which the runtime resolves automatically. The secret can have an expiration date, and you can automate its renewal using Azure automation or functions, enabling rotation without redeployment.

C

Distractor review

Use a managed identity to access the SQL database directly, bypassing the connection string entirely.

Managed identity can be used for Azure SQL if the identity is granted access, but the question specifically requires storing a connection string (which implies a password-based auth) and rotating it. Managed identity eliminates the need for a connection string password.

D

Distractor review

Store the connection string in Azure Key Vault and use an ARM template with a secret reference at deployment time.

ARM template references are resolved at deployment time, not runtime, so the secret is baked into the deployment. Rotating the secret would require redeployment.

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.

Related practice questions

Related AZ-204 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

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Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.

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Question 5

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Question 6

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FAQ

Questions learners often ask

What does this AZ-204 question test?

Read the scenario before looking for a memorised answer.

What is the correct answer to this question?

The correct answer is: Store the connection string in an App Setting and use Key Vault references. Configure a Key Vault policy to automatically rotate the secret. — Using Azure Key Vault with a managed identity allows the App Service to securely retrieve secrets. Key Vault supports expiration and rotation policies. By setting an expiration policy on the secret and periodically updating it, you can achieve automatic rotation. The App Service uses a Key Vault reference in the Application Settings to point to the secret, and the SDK automatically fetches the latest version.

What should I do if I get this AZ-204 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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