The answer is to use the connection string setting `Authentication=Active Directory Managed Identity` along with the `User Id` set to the managed identity name. This is correct because the `Authentication` keyword instructs the SQL client to request an access token from Azure AD via the managed identity endpoint, eliminating the need for a password or secret. The `User Id` identifies the specific system-assigned or user-assigned identity that has been granted database permissions, and the token is automatically acquired and refreshed by the Azure infrastructure. On the AZ-204 exam, this scenario tests your understanding of passwordless authentication patterns for Azure services, often appearing as a distractor against connection strings that use SQL authentication, service principal secrets, or `Active Directory Password`. A common trap is forgetting to include the `User Id` or using `Authentication=Active Directory Default` incorrectly. Memory tip: think “Token, not password” — the `Authentication` keyword triggers token acquisition, and the `User Id` is the identity’s name, not a login.
AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute solutions. 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 have an Azure Web App that uses Azure SQL Database. You need to securely connect to the database using Managed Identity. Which connection string setting should you use?
Option D is correct because it uses the 'Authentication=Active Directory Managed Identity' keyword, which tells the SQL client to acquire an access token from Azure AD via the managed identity endpoint. The 'User Id' is set to the name of the managed identity (the app's system-assigned or user-assigned identity), and no password is needed because the token is obtained automatically. This enables a passwordless, secure connection to Azure SQL Database without storing credentials.
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.
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'Integrated Security=True' (Windows auth) with Azure AD Managed Identity, or they think a password-based Azure AD option (like Active Directory Password) is sufficient, missing the key requirement of a passwordless, identity-based connection.
Detailed technical explanation
How to think about this question
Under the hood, when 'Authentication=Active Directory Managed Identity' is specified, the SqlClient driver calls the Azure Instance Metadata Service (IMDS) endpoint (169.254.169.254) or the environment-specific MSI endpoint to obtain an OAuth 2.0 access token for the SQL resource (https://database.windows.net). This token is then sent as a bearer token in the connection handshake. A subtle behavior is that the 'User Id' must match the exact name of the managed identity (e.g., the app service name for system-assigned) and the identity must be granted the appropriate SQL permissions (e.g., 'CREATE USER [...] FROM EXTERNAL PROVIDER').
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
Develop Azure compute solutions — This question tests Develop Azure compute solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Server=tcp:myserver.database.windows.net;Database=mydb;Authentication=Active Directory Managed Identity;User Id=myapp; — Option D is correct because it uses the 'Authentication=Active Directory Managed Identity' keyword, which tells the SQL client to acquire an access token from Azure AD via the managed identity endpoint. The 'User Id' is set to the name of the managed identity (the app's system-assigned or user-assigned identity), and no password is needed because the token is obtained automatically. This enables a passwordless, secure connection to Azure SQL Database without storing credentials.
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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