DP-203 Design and implement data storage Practice Question
Which TWO actions should be taken to secure data at rest in Azure Data Lake Storage Gen2?
⚠ Common exam trap
It's easy for candidates to confuse data protection mechanisms (soft delete, RBAC, client-side encryption) with the specific Azure-native controls for securing data at rest (network isolation and encryption key management).
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
✓
Configure firewall and virtual network rules
Configuring firewall and virtual network rules restricts network-level access to the storage account, preventing unauthorized traffic from reaching the data at rest. Option C is correct because enabling customer-managed keys (CMK) in Azure Key Vault provides an additional encryption layer for data at rest, allowing you to control and rotate encryption keys independently of Azure-managed keys.
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 soft delete for blobs
Why it's wrong here
Protects against accidental deletion, not security.
- ✓
Configure firewall and virtual network rules
Why this is correct
Restricts network access to storage.
- ✓
Enable customer-managed keys in Azure Key Vault
Why this is correct
Encrypts data at rest with CMK.
- ✗
Assign storage blob data contributor roles to users
Why it's wrong here
Access control, not data at rest encryption.
- ✗
Use client-side encryption with Azure Key Vault
Why it's wrong here
Client-side is not a built-in Azure feature for ADLS; it's possible but not a typical Azure recommendation.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DP-203 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-203 exam.