The correct answer is to configure customer-managed keys in Azure Key Vault and enable Key Vault diagnostics logging. This works because Azure Data Lake Storage Gen2 relies on Azure Storage Service Encryption (SSE) at rest, and by using a customer-managed key (CMK) stored in Key Vault, you retain full control over the encryption key lifecycle, including rotation and revocation. Enabling Key Vault diagnostics logging captures every access to that key, meeting the audit requirement. On the DP-203 exam, this scenario tests your understanding of encryption layers: platform-managed keys (default), customer-managed keys (your control), and double encryption (both). A common trap is confusing infrastructure encryption (which uses platform keys) or double encryption (which adds a second layer but still requires CMK for customer control) with the primary need for CMK and logging. Memory tip: “CMK + Logs = Control + Audit” — if you control the key, you must log its use.
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. 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.
Your Azure Data Lake Storage Gen2 account stores sensitive customer data. You need to ensure that data is encrypted at rest using customer-managed keys (CMK) and that access to the encryption key is logged. What should you do?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure customer-managed keys in Azure Key Vault and enable Key Vault diagnostics logging.
Option D is correct because CMK with Key Vault provides customer-controlled encryption keys, and Key Vault diagnostics logs key access. Option A is wrong because infrastructure encryption uses platform-managed keys. Option B is wrong because SSE with platform-managed keys does not give customer control. Option C is wrong because Double Encryption uses both platform and customer keys, but the primary requirement is CMK and logging.
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.
✗
Enable infrastructure encryption on the storage account.
Why it's wrong here
Infrastructure encryption uses platform-managed keys, not customer-managed keys.
✗
Enable double encryption using both platform-managed and customer-managed keys.
Why it's wrong here
Double encryption provides additional protection but does not specifically address logging key access.
✓
Configure customer-managed keys in Azure Key Vault and enable Key Vault diagnostics logging.
Why this is correct
CMK in Key Vault allows customer control, and diagnostics logs capture key access events.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Azure Storage Service Encryption (SSE) with platform-managed keys.
Why it's wrong here
SSE with platform-managed keys does not allow customer control.
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: Configure customer-managed keys in Azure Key Vault and enable Key Vault diagnostics logging. — Option D is correct because CMK with Key Vault provides customer-controlled encryption keys, and Key Vault diagnostics logs key access. Option A is wrong because infrastructure encryption uses platform-managed keys. Option B is wrong because SSE with platform-managed keys does not give customer control. Option C is wrong because Double Encryption uses both platform and customer keys, but the primary requirement is CMK and logging.
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. Which TWO actions should you take to secure sensitive data in Azure Data Lake Storage Gen2? (Choose two.)
medium
A.Enable public network access from all networks for ease of use
✓ B.Use access control lists (ACLs) to restrict access to specific directories
C.Allow anonymous access to enable sharing
D.Disable soft delete to prevent accidental retention of deleted data
✓ E.Enable encryption at rest using customer-managed keys in Azure Key Vault
Why B: Options A and C are correct. Option A: Enabling encryption at rest using customer-managed keys ensures data is encrypted. Option C: Using ACLs provides granular access control. Option B is wrong because disabling soft delete reduces security. Option D is wrong because public network access should be disabled for security. Option E is wrong because anonymous access is a security risk.
Last reviewed: Jun 21, 2026
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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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