The answer is system-assigned managed identities. This is correct because each system-assigned managed identity is intrinsically tied to the lifecycle of its specific Azure resource, such as a microservice running in Azure App Service or Azure Container Instances, and is automatically created and deleted with that resource, eliminating the need to store, rotate, or manage any credentials for authenticating to Azure SQL Database. On the Microsoft Azure Developer Associate AZ-204 exam, this scenario tests your understanding of identity-based authentication versus secret-based approaches; a common trap is choosing user-assigned managed identities, which are shared across resources and thus violate the requirement for each microservice to have its own identity. Remember the memory tip: “System = Single service, User = Used across services” — when you need per-service isolation with zero credential overhead, system-assigned is your automatic choice.
AZ-204 Implement Azure security Practice Question
This AZ-204 practice question tests your understanding of implement azure security. 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 developing a microservices application. Each microservice must authenticate to Azure SQL Database using its own identity. You need to minimize credential management overhead. What should you use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
System-assigned managed identities
System-assigned managed identities are tied to the lifecycle of the Azure resource and are automatically created and deleted. They are ideal for each microservice to have its own identity without managing credentials. Option A is wrong because user-assigned managed identities are shared across resources, not per-service. Option C is wrong because service principals require managing secrets. Option D is wrong because certificate-based authentication still requires certificate management.
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.
✓
System-assigned managed identities
Why this is correct
Each Azure resource can have a system-assigned identity, providing a unique identity per microservice.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
User-assigned managed identities
Why it's wrong here
User-assigned identities are independent and can be assigned to multiple resources, not per-service isolation.
✗
Certificate-based authentication
Why it's wrong here
Certificates need to be deployed and rotated manually.
✗
Service principals with client secrets
Why it's wrong here
Service principals require secret rotation and management.
Common exam traps
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.
Detailed technical explanation
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.
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.
Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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: System-assigned managed identities — System-assigned managed identities are tied to the lifecycle of the Azure resource and are automatically created and deleted. They are ideal for each microservice to have its own identity without managing credentials. Option A is wrong because user-assigned managed identities are shared across resources, not per-service. Option C is wrong because service principals require managing secrets. Option D is wrong because certificate-based authentication still requires certificate management.
What should I do if I get this AZ-204 question wrong?
Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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