The answer is to enable Microsoft Entra ID authentication and assign managed identities to the applications. This is correct because Azure SQL Database can trust tokens issued by Entra ID, allowing each application’s managed identity to acquire an access token from the Azure Managed Identity endpoint and present it to the database, completely eliminating the need for credentials in connection strings. On the DP-300 exam, this scenario tests your understanding of passwordless authentication patterns, often appearing as a trap where you might mistakenly choose to store service principal secrets or use SQL authentication. The key insight is that managed identities are tied to Azure resources, not users, so you must grant the identity explicit database permissions (like CREATE USER FROM EXTERNAL PROVIDER) after enabling Entra ID. Remember the mnemonic: “No creds, just tokens—Entra ID tokens.”
DP-300 Plan and implement data platform resources Practice Question
This DP-300 practice question tests your understanding of plan and implement data platform resources. 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.
You are configuring security for an Azure SQL Database that will be accessed by multiple applications. You need to implement a solution that allows applications to connect using their own managed identities without storing credentials in connection strings. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable Microsoft Entra ID authentication and assign managed identities to the applications.
Option A is correct because Microsoft Entra ID authentication allows Azure SQL Database to trust tokens issued by Entra ID for managed identities. By assigning a managed identity to each application, the application can acquire an access token from Azure Managed Identity endpoints and present it to the database without ever storing credentials in connection strings. This eliminates the need for passwords or connection string secrets.
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 Microsoft Entra ID authentication and assign managed identities to the applications.
Why this is correct
Managed identities provide passwordless authentication.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Always Encrypted with column master key in Azure Key Vault.
Why it's wrong here
Always Encrypted protects data, not authentication.
✗
Configure firewall rules to allow application IP addresses.
Why it's wrong here
Firewall rules control access but do not eliminate credentials.
✗
Enable SQL Server authentication and create a login for each application.
Why it's wrong here
SQL authentication requires storing credentials.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse authentication mechanisms (like Always Encrypted or firewall rules) with identity-based access control, mistakenly thinking they eliminate credential storage when they only address encryption or network filtering.
Detailed technical explanation
How to think about this question
Under the hood, Azure SQL Database integrates with the Microsoft Entra ID OAuth 2.0 token flow: the application’s managed identity (system-assigned or user-assigned) requests a token from the Azure Instance Metadata Service (IMDS) endpoint at 169.254.169.254 or the Azure CLI, then passes that token as the password in the SQL connection string using 'Authentication=Active Directory Managed Identity'. The database validates the token’s signature and claims against the contained database user mapped to the managed identity. A real-world scenario is a microservices architecture where each service has its own managed identity and accesses a shared Azure SQL Database with row-level security based on the identity’s group membership.
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 DP-300 question in full detail.
Plan and implement data platform resources — This question tests Plan and implement data platform resources — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable Microsoft Entra ID authentication and assign managed identities to the applications. — Option A is correct because Microsoft Entra ID authentication allows Azure SQL Database to trust tokens issued by Entra ID for managed identities. By assigning a managed identity to each application, the application can acquire an access token from Azure Managed Identity endpoints and present it to the database without ever storing credentials in connection strings. This eliminates the need for passwords or connection string secrets.
What should I do if I get this DP-300 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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