DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
Which TWO Azure features can be used to encrypt data at rest in Azure Blob Storage? (Choose two.)
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
✓
Customer-managed keys in Azure Key Vault
Options C and D are correct. D: Storage Service Encryption (SSE) encrypts data at rest by default. C: Customer-managed keys in Azure Key Vault provide additional control over encryption keys. Option A is wrong because Azure Disk Encryption is for VMs, not Blob Storage. Option B is wrong because Azure Information Protection is for classification and labeling, not encryption at rest. Option E is wrong because TLS is for data in transit.
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 Disk Encryption
Why it's wrong here
Azure Disk Encryption is used for encrypting disks of virtual machines, not for Azure Blob Storage data at rest.
- ✗
Azure Information Protection
Why it's wrong here
Azure Information Protection is for classifying and labeling data, not for encrypting data at rest in Blob Storage.
- ✓
Customer-managed keys in Azure Key Vault
Why this is correct
Customer-managed keys in Azure Key Vault allow you to control the encryption keys used for Storage Service Encryption.
- ✓
Storage Service Encryption (SSE)
Why this is correct
Storage Service Encryption (SSE) encrypts data at rest in Azure Blob Storage by default.
- ✗
Transport Layer Security (TLS)
Why it's wrong here
Transport Layer Security (TLS) encrypts data in transit, not 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 |
Go deeper
Related to this question
About these practice questions
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Same concept, more angles
1 more way this is tested on DP-203
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. 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?
easy- A.Azure Purview
- B.Azure Disk Encryption
- ✓ C.Azure Storage Service Encryption with customer-managed keys
- D.Azure Information Protection
Why C: 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.
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.