DP-300 Implement a secure environment Practice Question
Your company wants to implement transparent data encryption (TDE) for an Azure SQL Database using a customer-managed key stored in Azure Key Vault. Which TWO prerequisites must be met? (Choose two.)
⚠ Common exam trap
A common mix-up: candidates confuse TDE prerequisites with Always Encrypted prerequisites, mistakenly thinking a column master key (Option C) is needed, or they assume the database must be offline (Option E) for key configuration, which is not the case for TDE.
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
✓
The Azure SQL Server must have a system-assigned managed identity.
Azure SQL Database uses the server's system-assigned managed identity to authenticate to Azure Key Vault when accessing the customer-managed key for TDE. Without this identity, the SQL Server cannot prove its identity to Key Vault to retrieve the key. Option B is correct because the Key Vault must have an access policy that grants the SQL Server's managed identity the 'get', 'wrapKey', and 'unwrapKey' permissions, which are required for TDE operations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The Azure SQL Server must have a system-assigned managed identity.
Why this is correct
Managed identity is used to authenticate to Key Vault.
- ✓
The Key Vault must have an access policy granting necessary permissions to the SQL Server identity.
Why this is correct
Permissions required: Get, Wrap Key, Unwrap Key.
- ✗
The database must contain a column master key.
Why it's wrong here
Column master key is for Always Encrypted, not TDE.
- ✗
The Key Vault must be in a different region than the SQL Server.
Why it's wrong here
Key Vault should be in the same region for best performance.
- ✗
The database must be taken offline during key configuration.
Why it's wrong here
TDE can be configured online.
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.
Key term
Transparent Data Encryption
Transparent Data Encryption is a security feature that automatically encrypts data written to a database and decrypts it when read, without requiring any changes to the application.
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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.