- A
Azure Key Vault
Why wrong: Azure Key Vault is used for managing keys, but does not enable encryption itself; SSE handles encryption at rest.
- B
Azure Disk Encryption
Why wrong: Azure Disk Encryption is used for encrypting virtual machine disks, not for Azure Storage accounts.
- C
Azure Storage Service Encryption (SSE)
Azure Storage Service Encryption (SSE) is enabled by default and automatically encrypts data at rest using AES-256.
- D
Azure Purview
Why wrong: Azure Purview is a data governance service, not an encryption feature.
Question 484 of 851
How Azure Storage Service Encryption Protects Data at Rest in ADLS Gen2
This DP-203 practice question tests your understanding of secure, monitor, and optimize data storage and data processing. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You are configuring Azure Data Lake Storage Gen2 for a new data lake. You need to ensure that all data written to the 'raw' container is automatically encrypted at rest. 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 (SSE)
Azure Storage Service Encryption (SSE) is enabled by default for all Azure Storage accounts, including Data Lake Storage Gen2, and encrypts data at rest using AES-256. Option A (Azure Key Vault) is wrong because it is used for managing keys, not the encryption itself. Option B (Azure Disk Encryption) is wrong because it is for VMs, not for storage. Option D (Azure Purview) is wrong because it is for data governance.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 Key Vault
Why it's wrong here
Azure Key Vault is used for managing keys, but does not enable encryption itself; SSE handles encryption at rest.
- ✗
Azure Disk Encryption
Why it's wrong here
Azure Disk Encryption is used for encrypting virtual machine disks, not for Azure Storage accounts.
- ✓
Azure Storage Service Encryption (SSE)
Why this is correct
Azure Storage Service Encryption (SSE) is enabled by default and automatically encrypts data at rest using AES-256.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Azure Purview
Why it's wrong here
Azure Purview is a data governance service, not an encryption feature.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Quick reference
Symmetric Encryption Algorithm Comparison
| Algorithm | Key Size | Block Size | Status | Notes |
|---|---|---|---|---|
| AES-128 | 128-bit | 128-bit | Current standard | NIST approved; WPA3, TLS |
| AES-256 | 256-bit | 128-bit | Current standard | Preferred for sensitive / govt data |
| 3DES | 112-bit effective | 64-bit | Deprecated (2023) | Replaced by AES |
| DES | 56-bit | 64-bit | Broken | Cracked in < 24 h; never deploy |
| ChaCha20 | 256-bit | Stream cipher | Current | TLS 1.3, WireGuard |
What to study next
Got this wrong? Here's your next step.
Identify which DP-203 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Questions learners often ask
What does this DP-203 question test?
Secure, monitor, and optimize data storage and data processing — This question tests Secure, monitor, and optimize data storage and data processing — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Storage Service Encryption (SSE) — Azure Storage Service Encryption (SSE) is enabled by default for all Azure Storage accounts, including Data Lake Storage Gen2, and encrypts data at rest using AES-256. Option A (Azure Key Vault) is wrong because it is used for managing keys, not the encryption itself. Option B (Azure Disk Encryption) is wrong because it is for VMs, not for storage. Option D (Azure Purview) is wrong because it is for data governance.
What should I do if I get this DP-203 question wrong?
Identify which DP-203 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 2026
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.
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