The correct answer is Azure Key Vault integration with Storage Service Encryption, as this configuration enables customer-managed encryption keys for Azure Storage, including Azure Data Lake Storage Gen2. By integrating Azure Key Vault, you can bring your own keys (BYOK) to control and rotate the encryption keys used for data at rest, rather than relying on Microsoft-managed keys. On the Microsoft Azure Data Engineer Associate DP-203 exam, this concept tests your understanding of encryption responsibilities and key management within Azure storage services; a common trap is confusing Azure Disk Encryption, which applies only to virtual machine disks, or Azure Information Protection, which handles data classification and labeling, not storage-level encryption. Remember that Storage Service Encryption uses Microsoft-managed keys by default, so enabling customer-managed keys explicitly requires Key Vault integration. A helpful memory tip is to think “Storage + Key Vault = Customer Control,” reinforcing that the vault is the bridge to custom key ownership for at-rest encryption.
DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
This DP-203 practice question tests your understanding of secure, monitor, and optimize data storage and data processing. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 need to ensure that data in an Azure Data Lake Storage Gen2 account is encrypted at rest using a customer-managed key. Which feature should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Key Vault integration with Storage Service Encryption
Option C is correct because ADLS Gen2 supports encryption at rest with customer-managed keys via Azure Key Vault. Option A is wrong because Azure Information Protection is for labeling, not encryption at rest. Option B is wrong because Azure Disk Encryption is for VMs. Option D is wrong because Azure Storage Service Encryption uses Microsoft-managed keys by default; customer-managed keys require Key Vault.
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 integration with Storage Service Encryption
Why this is correct
Azure Storage Service Encryption supports customer-managed keys stored in Azure Key Vault.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Information Protection
Why it's wrong here
Azure Information Protection is for classification and labeling, not for encryption at rest.
✗
Azure Storage Service Encryption with Microsoft-managed keys
Why it's wrong here
Microsoft-managed keys are not customer-managed; the question asks for customer-managed key.
✗
Azure Disk Encryption
Why it's wrong here
Azure Disk Encryption is for virtual machine disks, not for storage accounts.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-203 question in full detail.
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.
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 Key Vault integration with Storage Service Encryption — Option C is correct because ADLS Gen2 supports encryption at rest with customer-managed keys via Azure Key Vault. Option A is wrong because Azure Information Protection is for labeling, not encryption at rest. Option B is wrong because Azure Disk Encryption is for VMs. Option D is wrong because Azure Storage Service Encryption uses Microsoft-managed keys by default; customer-managed keys require Key Vault.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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. You need to ensure that data stored in Azure Data Lake Storage Gen2 is encrypted at rest using customer-managed keys. Which Azure service should you use to manage the keys?
easy
✓ A.Azure Key Vault
B.Microsoft Purview
C.Azure Confidential Computing
D.Microsoft Entra ID
Why A: Option A is correct because Azure Key Vault is used to store customer-managed keys for Azure Storage encryption. Option B is wrong because Microsoft Purview is for data governance. Option C is wrong because Azure Confidential Computing is for compute. Option D is wrong because Microsoft Entra ID is for identity.
Last reviewed: Jun 21, 2026
Question Discussion
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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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