- A
Use the authentication-certificate policy with a named value that references the Key Vault certificate.
Named values can securely reference a certificate from Key Vault. The authentication-certificate policy uses the named value to attach the certificate to the backend request.
- B
Use the authentication-managed-identity policy to authenticate to the backend.
Why wrong: Managed identity authentication does not provide a client certificate; it uses Microsoft Entra ID tokens. The backend requires a client certificate, not a token.
- C
Upload the client certificate directly to APIM's Certificate store and reference it in the policy.
Why wrong: Uploading the certificate directly exposes its contents in APIM management and requires manual updates when the certificate expires, contrary to the requirement of using Key Vault.
- D
Use a JavaScript policy to fetch the certificate from Key Vault and attach it.
Why wrong: JavaScript policies are not recommended for secret retrieval and can expose secrets. The built-in Key Vault integration via Named Values is the secure and recommended approach.
Quick Answer
The answer is to use the **authentication-certificate policy** with a named value that references the Key Vault certificate. This is correct because Azure API Management’s named values can securely link to a client certificate stored in Azure Key Vault, allowing APIM to retrieve and present the certificate during mutual TLS handshake with the backend without ever exposing the certificate’s private key or contents in the policy XML. On the Microsoft Azure Developer Associate AZ-204 exam, this scenario tests your understanding of how to combine APIM policies with Key Vault integration for secure backend authentication—a common trap is trying to embed the certificate directly in the policy or using a different policy like `set-backend-service`. Remember the key pairing: **named value** stores the secret reference, **authentication-certificate** policy applies it at runtime. A useful memory tip is “Named value for the vault, auth-cert for the call”—this keeps the certificate out of plain sight and ensures secure, managed access.
AZ-204 Implement Azure security Practice Question
This AZ-204 practice question tests your understanding of implement azure security. 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.
You are using Azure API Management (APIM) to expose a REST API. The backend API requires mutual TLS (client certificate) for authentication. The client certificate is stored in Azure Key Vault. You need to configure APIM to use this certificate when calling the backend, without exposing the certificate contents in the policy files. Which APIM feature and policy 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 the authentication-certificate policy with a named value that references the Key Vault certificate.
Option A is correct because the `authentication-certificate` policy in Azure API Management can reference a client certificate stored in Azure Key Vault via a named value. Named values securely store secrets and can point to Key Vault certificates without exposing the certificate contents in policy files. This allows APIM to present the certificate during mutual TLS authentication to the backend API.
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 the authentication-certificate policy with a named value that references the Key Vault certificate.
Why this is correct
Named values can securely reference a certificate from Key Vault. The authentication-certificate policy uses the named value to attach the certificate to the backend request.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use the authentication-managed-identity policy to authenticate to the backend.
Why it's wrong here
Managed identity authentication does not provide a client certificate; it uses Microsoft Entra ID tokens. The backend requires a client certificate, not a token.
- ✗
Upload the client certificate directly to APIM's Certificate store and reference it in the policy.
Why it's wrong here
Uploading the certificate directly exposes its contents in APIM management and requires manual updates when the certificate expires, contrary to the requirement of using Key Vault.
- ✗
Use a JavaScript policy to fetch the certificate from Key Vault and attach it.
Why it's wrong here
JavaScript policies are not recommended for secret retrieval and can expose secrets. The built-in Key Vault integration via Named Values is the secure and recommended approach.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse the `authentication-managed-identity` policy with certificate-based authentication, or assume that uploading the certificate directly to APIM is equivalent to using Key Vault, but the question explicitly requires avoiding exposure of certificate contents in policy files, which only the named value approach with Key Vault reference achieves.
Detailed technical explanation
How to think about this question
Under the hood, APIM's named values can reference Key Vault secrets using the `@(Microsoft.Azure.ApiManagement.Service.GetNamedValueByName("name"))` syntax, and the `authentication-certificate` policy uses the certificate's thumbprint or named value to load the certificate from APIM's internal certificate store, which is automatically synchronized with Key Vault. This ensures the private key never leaves Key Vault and is securely injected into the TLS handshake. In real-world scenarios, this pattern is critical for compliance with security policies that mandate secrets never be written to disk or logs.
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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Implement Azure security — study guide chapter
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Implement Azure security practice questions
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FAQ
Questions learners often ask
What does this AZ-204 question test?
Implement Azure security — This question tests Implement Azure security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use the authentication-certificate policy with a named value that references the Key Vault certificate. — Option A is correct because the `authentication-certificate` policy in Azure API Management can reference a client certificate stored in Azure Key Vault via a named value. Named values securely store secrets and can point to Key Vault certificates without exposing the certificate contents in policy files. This allows APIM to present the certificate during mutual TLS authentication to the backend API.
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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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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