Quick Answer
The answer is an app registration in Microsoft Entra ID, an Azure Managed Identity, and the Microsoft Graph API permission configuration. These three components work together because the app registration establishes the application’s identity in Entra ID, providing the client ID and tenant ID needed for OAuth 2.0 flows, while the managed identity securely handles credential rotation and token acquisition without storing secrets in code. The API permissions then define exactly which Microsoft Graph scopes the function can access, such as reading user profiles or sending emails. On the AZ-204 exam, this scenario tests your understanding of serverless authentication patterns, often appearing as a scenario where a developer must avoid hardcoded secrets—a common trap is forgetting that managed identity alone cannot work without a pre-configured app registration to define permissions. Remember the mnemonic “ARM”: App registration, Role (managed identity), and Microsoft Graph permissions.
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.
A developer needs to authenticate an Azure Function app to call Microsoft Graph API. Which THREE components are required?
Azure API Management
Why wrong: API Management is not required for Graph API authentication.
Microsoft Entra ID app registration
App registration defines permissions and authentication.
Azure SQL Database
Why wrong: SQL Database is not needed for Graph API authentication.
Azure Key Vault
Key Vault can securely store client secrets if needed.
Azure Managed Identity
Managed Identity provides an identity for the function.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Microsoft Entra ID app registration
Option B is correct because an app registration in Microsoft Entra ID (formerly Azure AD) is required to define the application identity, configure API permissions for Microsoft Graph, and obtain a client ID and tenant ID. This registration is the foundation for OAuth 2.0 authentication flows, enabling the Azure Function to request an access token for Microsoft Graph.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure API Management
Why it's wrong here
API Management is not required for Graph API authentication.
Microsoft Entra ID app registration
Why this is correct
App registration defines permissions and authentication.
Related concept
Read the scenario before looking for a memorised answer.
Azure SQL Database
Why it's wrong here
SQL Database is not needed for Graph API authentication.
Azure Key Vault
Why this is correct
Key Vault can securely store client secrets if needed.
Related concept
Read the scenario before looking for a memorised answer.
Azure Managed Identity
Why this is correct
Managed Identity provides an identity for the function.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often think Azure API Management is needed to secure the outbound call, but it is only relevant for inbound API management, not for the Function app's own authentication to Microsoft Graph.
Detailed technical explanation
Under the hood, Managed Identity (Option E) creates a service principal in Microsoft Entra ID automatically linked to the Function app, eliminating the need for manual credential management. The Azure Function uses the Managed Identity endpoint (169.254.169.254) to obtain an access token for the Microsoft Graph resource (https://graph.microsoft.com) via OAuth 2.0 client credentials grant, which is then passed in the Authorization header as a Bearer token. Azure Key Vault (Option D) can securely store client secrets or certificates if Managed Identity is not used, but it is not strictly required when Managed Identity is enabled.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Connect to and consume Azure services and third-party services — study guide chapter
Learn the concepts, then practise the questions
Connect to and consume Azure services and third-party services practice questions
Targeted practice on this topic area only
All AZ-204 questions
997 questions across all exam domains
Microsoft Azure Developer Associate AZ-204 study guide
Full concept coverage aligned to exam objectives
AZ-204 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise AZ-204 questions linked to Develop Azure compute solutions.
Practise AZ-204 questions linked to Develop for Azure storage.
Practise AZ-204 questions linked to Implement Azure security.
Practise AZ-204 questions linked to Connect to and consume Azure services and third-party services.
Practise AZ-204 questions linked to Monitor, troubleshoot, and optimize Azure solutions.
Practise AZ-204 questions linked to AZ-204 fundamentals.
Practise AZ-204 questions linked to AZ-204 scenario.
Practise AZ-204 questions linked to AZ-204 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
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..
The correct answer is: Microsoft Entra ID app registration — Option B is correct because an app registration in Microsoft Entra ID (formerly Azure AD) is required to define the application identity, configure API permissions for Microsoft Graph, and obtain a client ID and tenant ID. This registration is the foundation for OAuth 2.0 authentication flows, enabling the Azure Function to request an access token for Microsoft Graph.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 24, 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.