DP-300 Implement a secure environment Practice Question
You need to ensure that all queries accessing a specific column containing credit card numbers are encrypted both at rest and in transit between the application and Azure SQL Database. Which THREE technologies should you implement? (Choose three.)
⚠ Common exam trap
Watch out — candidates often confuse Dynamic Data Masking or Row-Level Security with encryption, but neither provides actual encryption of data at rest or in transit, which is explicitly required by the question.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enforce TLS 1.2 or higher for client connections
Enforcing TLS 1.2 or higher for client connections encrypts data in transit between the application and Azure SQL Database. TLS ensures that all queries and their results, including the credit card column, are protected from interception during network transmission.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enforce TLS 1.2 or higher for client connections
Why this is correct
TLS encrypts data in transit between application and database.
- ✓
Always Encrypted with column encryption key stored in Azure Key Vault
Why this is correct
Always Encrypted encrypts column data at rest and in transit from client.
- ✓
Transparent Data Encryption (TDE)
Why this is correct
TDE encrypts the entire database at rest.
- ✗
Row-Level Security
Why it's wrong here
RLS restricts row access but does not encrypt data.
- ✗
Dynamic Data Masking
Why it's wrong here
Masking hides data from users but does not encrypt it.
Go deeper
Related to this question
Learn chapter
Overview of Azure Data Platform Options
Key term
Azure SQL Performance Tuning
Azure SQL Performance Tuning is the process of optimizing the speed and efficiency of queries and database operations in Microsoft Azure SQL Database or SQL Managed Instance to reduce latency and improve throughput.
About these practice questions
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DP-300 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 DP-300 exam.