Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
You are building an Azure Logic App that needs to call a third-party REST API. The API requires an API key to be passed in the 'X-API-Key' header. You have stored the API key as a secret in Azure Key Vault. The Logic App uses a managed identity that has read access to the Key Vault secret. You want to retrieve the API key securely at runtime and include it in the HTTP request. 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
Best answer
Use the 'Get secret' action from the Azure Key Vault connector, configured to authenticate with a managed identity. Then pass the output to the 'HTTP' action's header as 'X-API-Key'.
The Azure Key Vault connector allows secure retrieval of secrets using managed identity. The HTTP action can then reference the secret value in the header, keeping it out of the workflow definition.
B
Distractor review
Create an API connection for the external API, providing the API key in the connection parameters. Then use that connection in the Logic App.
API connections are pre-built connectors that typically use OAuth or basic auth. They may not support custom header injection and are not recommended for custom APIs that don't have a connector.
C
Distractor review
Store the API key directly in the Logic App definition's 'constants' section and reference it in the HTTP action.
Storing secrets directly in the Logic App definition is insecure and violates best practices. Secrets should be stored in Azure Key Vault and retrieved at runtime.
D
Distractor review
Use the 'HTTP' action with 'Managed Identity' authentication type, and configure the external API to accept Microsoft Entra ID tokens.
The external API expects an API key, not an Microsoft Entra ID token. Managed identity can only be used if the target service supports AAD authentication, which this third-party API does not.
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.
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
An application stores customer invoices in Azure Blob Storage. Deleted blobs must be recoverable for 14 days. What should be enabled?
Question 2
You are deploying a containerized application to Azure Container Instances. The application requires a custom domain name and SSL/TLS termination. You need to configure these features. Which resource should you create alongside the container group?
Question 3
A developer needs to run a Kusto query against application request data to identify 95th percentile latency by operation. Where should the query be run? The architecture review board prefers a managed AWS-native control.
Question 4
You are developing a web app that authenticates users via Microsoft Entra ID. The app needs to read the user's profile and send emails on their behalf. You want to minimize user consent prompts. Which OAuth 2.0 grant type should you use?
Question 5
You are developing an Azure Function that processes messages from an Azure Service Bus queue. The function uses a Service Bus queue trigger and runs on a Consumption Plan. The queue receives a high volume of messages in bursts. You need to ensure that the function scales out to handle the load but does not exceed 10 concurrent instances. Which configuration should you apply?
Question 6
You are monitoring an Azure App Service using Application Insights. You notice that the server response time is high for certain requests. You need to drill down to see which external dependencies (like databases or APIs) are causing the delay. Which Application Insights feature should you use?
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: Use the 'Get secret' action from the Azure Key Vault connector, configured to authenticate with a managed identity. Then pass the output to the 'HTTP' action's header as 'X-API-Key'. — The best approach is to use the 'HTTP + Swagger' or 'HTTP' action with an authentication type? Logic Apps can use managed identity to authenticate to Azure Key Vault. You can use an 'HTTP' action to call Key Vault's REST API to get the secret, but that is complex. The simpler and recommended approach is to use the 'Azure Key Vault' connector's 'Get secret' action, which can authenticate using the managed identity. Then use that secret in the HTTP action's header. Option A describes this correctly. Option B suggests using an API connection with an API key and then referencing it, but that requires creating an API connection which may not support custom headers easily. Option C suggests storing the API key directly in the Logic App definition, which is insecure. Option D suggests using the 'HTTP' action with managed identity to call the external API directly, but the external API does not support AAD authentication.
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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