DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
Your company uses Azure Blob Storage to store backups. You need to ensure that data is encrypted at rest using a customer-managed key stored in Azure Key Vault. Which feature should you enable?
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
✓
Azure Storage Service Encryption with customer-managed keys
Azure Storage Service Encryption (SSE) encrypts data at rest and supports customer-managed keys stored in Azure Key Vault. Option A is incorrect because Azure Purview is a data governance service, not for encryption. Option B is incorrect because Azure Disk Encryption is used for virtual machine disks, not Blob Storage. Option D is incorrect because Azure Information Protection is for classification and labeling. Therefore, option C is correct.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Azure Purview
Why it's wrong here
Data governance and cataloging service.
- ✗
Azure Disk Encryption
Why it's wrong here
For VM disks, not Blob Storage.
- ✓
Azure Storage Service Encryption with customer-managed keys
Why this is correct
Allows using CMK from Key Vault for Blob Storage.
- ✗
Azure Information Protection
Why it's wrong here
For classification and labeling, not encryption at rest.
Quick reference
Azure Blob Storage Tier Comparison
| Tier | Storage Cost | Retrieval Cost | Latency | Use Case |
|---|---|---|---|---|
| Hot | Highest | Lowest | Immediate | Active data, frequent reads |
| Cool | Lower | Higher | Immediate | Data accessed < once / month |
| Cold | Lower still | Higher | Immediate | Data accessed < once / quarter |
| Archive | Lowest | Highest + rehydration delay | Hours | Long-term compliance retention |
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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.