The answer is to use OAuth 2.0 authorization code flow with delegated permissions. This is correct because when a Logic App sends an email on behalf of a signed-in user via Microsoft Graph, it must act with the user’s identity and consent, which requires delegated permissions scoped to that user. The authorization code flow allows the Logic App to obtain an access token that represents the authenticated user, enabling it to call Microsoft Graph as that user. On the AZ-204 exam, this scenario tests your understanding of authentication delegation versus app-only access—a common trap is choosing client credentials flow or managed identity, which both bypass the user context and are designed for backend services, not user-delegated actions. Remember that any time you see “on behalf of a signed-in user” in an Azure Logic App or Microsoft Graph question, your immediate answer should be OAuth 2.0 authorization code flow with delegated permissions. A helpful memory tip: “Delegate for the user, client creds for the server.”
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.
Your Azure Logic App needs to send emails using Microsoft Graph API on behalf of the signed-in user. The user is authenticated with Microsoft Entra ID. Which authentication method should you use in the Logic App?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use OAuth 2.0 authorization code flow with delegated permissions
Option D is correct because the Logic App connector for Microsoft Graph supports OAuth 2.0 with user delegation. Option A is wrong because managed identity cannot act on behalf of a signed-in user. Option B is wrong because Basic Auth is not supported. Option C is wrong because client credentials flow is for app-only access.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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 OAuth 2.0 authorization code flow with delegated permissions
Why this is correct
This allows the app to act on behalf of the signed-in user.
Related concept
Authentication checks who the user is.
✗
Use a system-assigned managed identity
Why it's wrong here
Managed identity represents the Logic App, not the user.
✗
Use client credentials flow with an app registration
Why it's wrong here
Client credentials flow is for app-only, not on behalf of user.
✗
Use Basic authentication with user credentials
Why it's wrong here
Basic Auth is not supported for Microsoft Graph.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related AZ-204 questions on access control and AAA configuration.
Implement Azure security — This question tests Implement Azure security — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Use OAuth 2.0 authorization code flow with delegated permissions — Option D is correct because the Logic App connector for Microsoft Graph supports OAuth 2.0 with user delegation. Option A is wrong because managed identity cannot act on behalf of a signed-in user. Option B is wrong because Basic Auth is not supported. Option C is wrong because client credentials flow is for app-only access.
What should I do if I get this AZ-204 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related AZ-204 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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