- A
Enable system-assigned managed identity on the function app and grant it access to the SQL database.
System-assigned identity is a type of managed identity.
- B
Assign the managed identity directly to the Azure SQL Database logical server.
Why wrong: Managed identities are assigned to Azure resources like function apps, not to SQL servers.
- C
Use the managed identity's principal ID to create a contained database user in SQL Database.
This is the standard way to grant access to a managed identity.
- D
Create a user-assigned managed identity, assign it to the function app, and grant it access to the SQL database.
User-assigned identity is also a managed identity.
- E
Create a service principal and assign it to the function app.
Why wrong: A service principal is not a managed identity; it requires credential management.
Quick Answer
The answer is that options A, B, and D are valid ways to authenticate an Azure Function to an Azure SQL Database using managed identities. This is correct because both system-assigned and user-assigned managed identities are Azure AD identities that can be enabled or assigned to a function app, then granted database permissions via a contained database user in SQL Database, eliminating the need for connection strings or secrets. On the AZ-204 exam, this concept tests your understanding of identity-based authentication for PaaS services, often appearing in scenarios where you must secure serverless functions; a common trap is confusing service principals (which are not managed identities) with managed identities, or thinking you assign the identity directly to the database rather than to the compute resource. Remember the key rule: managed identities are assigned to the Azure resource (the function app), not to the data store itself. A useful memory tip is “Identity on the app, permissions on the DB” — the identity lives with the compute, and you grant it access to the database.
AZ-204 Implement Azure security Practice Question
This AZ-204 practice question tests your understanding of implement azure security. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Which THREE of the following are valid ways to authenticate an Azure Function to an Azure SQL Database using managed identities?
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
Enable system-assigned managed identity on the function app and grant it access to the SQL database.
Options A, B, and D are correct. Option A is correct because a system-assigned managed identity can be enabled for the function app and granted access to SQL DB. Option B is correct because a user-assigned managed identity can be assigned to the function app. Option D is correct because both system and user-assigned identities can be used; they are both managed identity types. Option C is wrong because service principal is not a managed identity. Option E is wrong because managed identity cannot be assigned directly to SQL DB; it's assigned to the function app.
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.
- ✓
Enable system-assigned managed identity on the function app and grant it access to the SQL database.
Why this is correct
System-assigned identity is a type of managed identity.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Assign the managed identity directly to the Azure SQL Database logical server.
Why it's wrong here
Managed identities are assigned to Azure resources like function apps, not to SQL servers.
- ✓
Use the managed identity's principal ID to create a contained database user in SQL Database.
Why this is correct
This is the standard way to grant access to a managed identity.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Create a user-assigned managed identity, assign it to the function app, and grant it access to the SQL database.
Why this is correct
User-assigned identity is also a managed identity.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a service principal and assign it to the function app.
Why it's wrong here
A service principal is not a managed identity; it requires credential 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.
What to study next
Got this wrong? Here's your next step.
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 — study guide chapter
Learn the concepts, then practise the questions
- →
Implement Azure security practice questions
Targeted practice on this topic area only
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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: Enable system-assigned managed identity on the function app and grant it access to the SQL database. — Options A, B, and D are correct. Option A is correct because a system-assigned managed identity can be enabled for the function app and granted access to SQL DB. Option B is correct because a user-assigned managed identity can be assigned to the function app. Option D is correct because both system and user-assigned identities can be used; they are both managed identity types. Option C is wrong because service principal is not a managed identity. Option E is wrong because managed identity cannot be assigned directly to SQL DB; it's assigned to the function app.
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.
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 20, 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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