This DP-900 practice question tests your understanding of identify considerations for relational data on azure. 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.
A company has an Azure SQL Database that stores sensitive financial data. They need to ensure that database administrators (DBAs) cannot view the actual data but can still perform administrative tasks. Which feature should they implement?
Azure role-based access control (RBAC)
Why wrong: RBAC controls who can access the database, but doesn't mask data.
Dynamic data masking
Dynamic data masking can obfuscate sensitive data for specified users.
Transparent data encryption (TDE)
Why wrong: TDE encrypts data at rest but DBAs can still see decrypted data.
Azure SQL Database auditing
Why wrong: Auditing logs access but does not prevent data viewing.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Dynamic data masking
Option B is correct because dynamic data masking hides sensitive data from non-privileged users, including DBAs if they are not exempted. Option A is wrong because TDE encrypts at rest but does not hide data from DBAs. Option C is wrong because Azure RBAC controls access but doesn't mask data. Option D is wrong because Azure SQL Database auditing logs actions but doesn't prevent viewing.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure role-based access control (RBAC)
Why it's wrong here
RBAC controls who can access the database, but doesn't mask data.
Dynamic data masking
Why this is correct
Dynamic data masking can obfuscate sensitive data for specified users.
Related concept
Authentication checks who the user is.
Transparent data encryption (TDE)
Why it's wrong here
TDE encrypts data at rest but DBAs can still see decrypted data.
Azure SQL Database auditing
Why it's wrong here
Auditing logs access but does not prevent data viewing.
Common exam traps
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
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.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related DP-900 questions on access control and AAA configuration.
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FAQ
Identify considerations for relational data on Azure — This question tests Identify considerations for relational data on Azure — Authentication checks who the user is..
The correct answer is: Dynamic data masking — Option B is correct because dynamic data masking hides sensitive data from non-privileged users, including DBAs if they are not exempted. Option A is wrong because TDE encrypts at rest but does not hide data from DBAs. Option C is wrong because Azure RBAC controls access but doesn't mask data. Option D is wrong because Azure SQL Database auditing logs actions but doesn't prevent viewing.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related DP-900 questions on access control and AAA configuration.
Authentication checks who the user is.
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Last reviewed: Jun 20, 2026
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