- A
Use a policy expression with the context.Variables to store the key.
Why wrong: Context variables are used to store values within the scope of a policy, but they cannot directly retrieve secrets from Key Vault. The key value would still need to be obtained from somewhere.
- B
Store the API key directly in the backend settings of the API.
Why wrong: Storing keys directly in backend settings exposes them in plaintext in the configuration and is not secure.
- C
Use a named value that references the Key Vault secret, and reference that named value in a set-header policy.
Correct. Named values in APIM can be linked to Key Vault secrets. The policy will automatically retrieve the secret value and use it in the header without exposing the secret.
- D
Use the authentication-managed-identity policy to authenticate to Key Vault and retrieve the secret.
Why wrong: APIM does not have a built-in policy to directly authenticate to Key Vault and retrieve secrets. Instead, named values handle that integration automatically.
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. 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.
Your company uses Azure API Management (APIM) to expose several APIs. One of the backend APIs requires an API key that is stored in Azure Key Vault. You need to configure APIM to retrieve the API key from Key Vault and pass it to the backend in a header without exposing the key in policy definitions. Which APIM feature should you use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Use a named value that references the Key Vault secret, and reference that named value in a set-header policy.
Option C is correct because named values in Azure API Management can be configured to reference secrets stored in Azure Key Vault. When a named value is linked to a Key Vault secret, APIM automatically retrieves the secret value at runtime and can inject it into policies (e.g., a set-header policy) without the secret ever appearing in plaintext in the policy definition. This approach ensures the API key is securely managed and not exposed in source control or policy code.
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.
- ✗
Use a policy expression with the context.Variables to store the key.
Why it's wrong here
Context variables are used to store values within the scope of a policy, but they cannot directly retrieve secrets from Key Vault. The key value would still need to be obtained from somewhere.
- ✗
Store the API key directly in the backend settings of the API.
Why it's wrong here
Storing keys directly in backend settings exposes them in plaintext in the configuration and is not secure.
- ✓
Use a named value that references the Key Vault secret, and reference that named value in a set-header policy.
Why this is correct
Correct. Named values in APIM can be linked to Key Vault secrets. The policy will automatically retrieve the secret value and use it in the header without exposing the secret.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use the authentication-managed-identity policy to authenticate to Key Vault and retrieve the secret.
Why it's wrong here
APIM does not have a built-in policy to directly authenticate to Key Vault and retrieve secrets. Instead, named values handle that integration automatically.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the authentication-managed-identity policy (used for backend authentication) with the named value Key Vault integration (used for secret retrieval), leading them to select option D even though it does not directly retrieve secrets from Key Vault.
Detailed technical explanation
How to think about this question
Under the hood, when a named value references a Key Vault secret, APIM uses its system-assigned or user-assigned managed identity to authenticate to Key Vault and retrieve the secret value at runtime. The secret is cached in memory for a configurable period (default 5 minutes) to reduce latency and Key Vault calls. This mechanism ensures that the secret is never stored in plaintext in APIM's configuration database and is only available during policy execution, making it ideal for scenarios where API keys or connection strings must be rotated without redeploying APIM.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this AZ-204 question test?
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: Use a named value that references the Key Vault secret, and reference that named value in a set-header policy. — Option C is correct because named values in Azure API Management can be configured to reference secrets stored in Azure Key Vault. When a named value is linked to a Key Vault secret, APIM automatically retrieves the secret value at runtime and can inject it into policies (e.g., a set-header policy) without the secret ever appearing in plaintext in the policy definition. This approach ensures the API key is securely managed and not exposed in source control or policy code.
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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Last reviewed: Jun 11, 2026
This AZ-204 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-204 exam.
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