AZ-204 Practice Question: Connect to and consume Azure services and third-party services
This AZ-204 practice question tests your understanding of connect to and consume azure services and third-party services. 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.
You are building an Azure Logic App that must call an external REST API. The API requires an API key passed in the Authorization header. You need to store the API key securely and reference it in the Logic App without exposing it in the workflow definition. What should you do?
This approach securely stores the API key in Azure Key Vault and uses the Key Vault connector to retrieve it at runtime without exposing the key in the Logic App definition.
B
B
Why wrong: Azure App Configuration is designed for application configuration settings, not secrets. It does not provide the same security guarantees as Key Vault.
C
C
Why wrong: Storing the API key in the Logic App's connection parameters may still expose the key in the workflow definition or connection strings, which is not secure.
D
D
Why wrong: Storing the API key as a plain text string in a variable initialization action exposes the key directly in the workflow definition and is highly insecure.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A
Option A is correct because Azure Logic Apps can securely reference API keys stored in Azure Key Vault using a managed identity. By configuring the Logic App with a system-assigned or user-assigned managed identity, you grant it access to retrieve the secret from Key Vault at runtime without hardcoding the key in the workflow definition or connection parameters. This approach ensures the API key is never exposed in the Logic App's JSON definition or source control.
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.
✓
A
Why this is correct
This approach securely stores the API key in Azure Key Vault and uses the Key Vault connector to retrieve it at runtime without exposing the key in the Logic App definition.
Related concept
Read the scenario before looking for a memorised answer.
✗
B
Why it's wrong here
Azure App Configuration is designed for application configuration settings, not secrets. It does not provide the same security guarantees as Key Vault.
✗
C
Why it's wrong here
Storing the API key in the Logic App's connection parameters may still expose the key in the workflow definition or connection strings, which is not secure.
✗
D
Why it's wrong here
Storing the API key as a plain text string in a variable initialization action exposes the key directly in the workflow definition and is highly insecure.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure App Configuration with Azure Key Vault, assuming App Configuration's encrypted storage is sufficient for secrets, but Key Vault is the only service designed for managing and auditing access to sensitive secrets like API keys.
Detailed technical explanation
How to think about this question
Under the hood, Azure Logic Apps integrates with Key Vault via the 'keyvault' connector or by using managed identity authentication in an HTTP action. When using managed identity, the Logic App runtime obtains an Azure AD token for the managed identity, which is then used to authenticate to Key Vault and retrieve the secret. This token-based flow ensures the API key is never transmitted in plaintext within the workflow definition or stored in the Logic App's storage account. In a real-world scenario, this pattern is critical for PCI-DSS or HIPAA compliance where secrets must never appear in logs or source 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.
Connect to and consume Azure services and third-party services — This question tests Connect to and consume Azure services and third-party services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A — Option A is correct because Azure Logic Apps can securely reference API keys stored in Azure Key Vault using a managed identity. By configuring the Logic App with a system-assigned or user-assigned managed identity, you grant it access to retrieve the secret from Key Vault at runtime without hardcoding the key in the workflow definition or connection parameters. This approach ensures the API key is never exposed in the Logic App's JSON definition or source control.
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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