- A
Azure NetApp Files.
Why wrong: NetApp Files is for high-performance NFS, lacks Purview integration.
- B
Azure Files.
Why wrong: Azure Files is for SMB file shares, not data lake analytics.
- C
Azure Data Lake Storage Gen2 (ADLS Gen2).
ADLS Gen2 provides ACLs, encryption, and Purview integration.
- D
Azure Blob Storage.
Why wrong: Blob Storage does not support file-level ACLs.
Question 647 of 851
DP-203 Design and implement data storage Practice Question
This DP-203 practice question tests your understanding of design and implement data storage. 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 designing a data lake architecture for a healthcare company. The solution must support fine-grained access control at the file level, encryption at rest and in transit, and integration with Microsoft Purview for data lineage. Which storage solution should you recommend?
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 Data Lake Storage Gen2 (ADLS Gen2).
Azure Data Lake Storage Gen2 (ADLS Gen2) is the correct choice because it combines a hierarchical namespace with POSIX-like access control lists (ACLs) for fine-grained file-level permissions, supports encryption at rest (Azure Storage Service Encryption) and in transit (TLS 1.2+), and natively integrates with Microsoft Purview for automated data lineage and cataloging. This makes it ideal for healthcare scenarios requiring strict compliance and auditability.
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 NetApp Files.
Why it's wrong here
NetApp Files is for high-performance NFS, lacks Purview integration.
- ✗
Azure Files.
Why it's wrong here
Azure Files is for SMB file shares, not data lake analytics.
- ✓
Azure Data Lake Storage Gen2 (ADLS Gen2).
Why this is correct
ADLS Gen2 provides ACLs, encryption, and Purview integration.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Azure Blob Storage.
Why it's wrong here
Blob Storage does not support file-level ACLs.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure Blob Storage with ADLS Gen2, assuming blob storage's container-level permissions are sufficient for file-level control, but the hierarchical namespace and POSIX ACLs are exclusive to ADLS Gen2 and required for the fine-grained access described.
Detailed technical explanation
How to think about this question
ADLS Gen2 implements a hierarchical namespace by extending Azure Blob Storage with a file system abstraction, allowing directories and files to inherit permissions via ACLs (up to 32 ACL entries per file/directory). Under the hood, it uses Azure Active Directory (Azure AD) for RBAC and POSIX ACLs for granular control, with encryption at rest using 256-bit AES and in transit via TLS 1.2. In a real-world healthcare scenario, this enables a data lake where researchers can access de-identified datasets while clinicians see only their patients' records, with Purview automatically capturing lineage from ingestion to consumption.
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.
TExam Day Tips
- 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.
Visual reference
What to study next
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FAQ
Questions learners often ask
What does this DP-203 question test?
Design and implement data storage — This question tests Design and implement data storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Data Lake Storage Gen2 (ADLS Gen2). — Azure Data Lake Storage Gen2 (ADLS Gen2) is the correct choice because it combines a hierarchical namespace with POSIX-like access control lists (ACLs) for fine-grained file-level permissions, supports encryption at rest (Azure Storage Service Encryption) and in transit (TLS 1.2+), and natively integrates with Microsoft Purview for automated data lineage and cataloging. This makes it ideal for healthcare scenarios requiring strict compliance and auditability.
What should I do if I get this DP-203 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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