The correct answer is to implement Transparent Data Encryption (TDE), Dynamic Data Masking (DDM), and enforce TLS 1.2. TDE encrypts the database files at rest, ensuring that physical theft or unauthorized access to storage does not expose data, while DDM dynamically obfuscates PII columns in query results for non-privileged users without altering the underlying data. Enforcing a minimal TLS version 1.2 secures data in transit by requiring encrypted connections between applications and the database, addressing the encryption-in-transit requirement. On the AZ-500 exam, this scenario tests your ability to distinguish between Azure-native, server-side controls and client-side solutions like Always Encrypted, which is unnecessary here since legacy apps cannot support it. A common trap is choosing Always Encrypted because it also masks data, but remember that TDE covers at-rest encryption and DDM handles masking for non-privileged users, while TLS 1.2 secures the channel. Memory tip: "TDE for disk, DDM for eyes, TLS for wires."
AZ-500 Secure compute, storage, and databases Practice Question
This AZ-500 practice question tests your understanding of secure compute, storage, and databases. 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.
You are designing security for an Azure SQL Database that will store personally identifiable information (PII). The database will be accessed by multiple applications, some of which are legacy and cannot use Azure AD authentication. Your requirements include: encrypting data at rest, encrypting data in transit, and dynamically masking PII columns for non-privileged users. Which THREE features should you implement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure Dynamic Data Masking (DDM) for the PII columns.
Option A: Transparent Data Encryption (TDE) encrypts data at rest. Option C: Dynamic Data Masking (DDM) masks PII columns for non-privileged users. Option D: Enforce minimal TLS version 1.2 ensures data in transit is encrypted. Option B (Always Encrypted) is client-side encryption but not required if TDE is used and the client does not support it. Option E (Azure Information Protection) is not for database-level encryption.
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.
✓
Configure Dynamic Data Masking (DDM) for the PII columns.
Why this is correct
DDM masks PII for non-privileged users, meeting the masking requirement.
Related concept
Authentication checks who the user is.
✗
Implement Always Encrypted for the PII columns.
Why it's wrong here
Always Encrypted is client-side and requires client driver support; legacy apps may not support it.
✓
Set the 'Minimum TLS Version' to 1.2 on the Azure SQL Server.
Enable Transparent Data Encryption (TDE) for the Azure SQL Database.
Why this is correct
TDE encrypts the database at rest, meeting encryption at rest requirement.
Related concept
Authentication checks who the user is.
✗
Apply Azure Information Protection labels to the database.
Why it's wrong here
AIP labels are for classification and persistent protection, not for database-level encryption.
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-500 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-500 questions on access control and AAA configuration.
Secure compute, storage, and databases — This question tests Secure compute, storage, and databases — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Configure Dynamic Data Masking (DDM) for the PII columns. — Option A: Transparent Data Encryption (TDE) encrypts data at rest. Option C: Dynamic Data Masking (DDM) masks PII columns for non-privileged users. Option D: Enforce minimal TLS version 1.2 ensures data in transit is encrypted. Option B (Always Encrypted) is client-side encryption but not required if TDE is used and the client does not support it. Option E (Azure Information Protection) is not for database-level encryption.
What should I do if I get this AZ-500 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-500 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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