The answer is to require HTTPS for all data transfers, enable Azure Storage Service Encryption (SSE) for data at rest, and configure Role-Based Access Control (RBAC) and Access Control Lists (ACLs) for fine-grained authorization. HTTPS ensures that all data in transit is encrypted between clients and Azure Data Lake Storage Gen2, preventing man-in-the-middle attacks, while SSE automatically encrypts data at rest using 256-bit AES encryption, a transparent, compliance-ready safeguard. RBAC and ACLs then control who can access that encrypted data, completing the defense-in-depth strategy. On the DP-203 exam, this question tests your understanding that SSE is enabled by default and requires no manual action, so the trap is to list it as an optional step—remember, it’s automatic. The exam also expects you to distinguish HTTPS from other transfer protocols like SMB or FTP, which are less secure. Memory tip: think “SSE for sleep, HTTPS for travel, RBAC/ACLs for the gate.”
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 implementing a data lake using Azure Data Lake Storage Gen2. Which THREE actions should you take to secure the data at rest and in transit?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable Azure Storage Service Encryption (SSE) for data at rest
Azure Storage Service Encryption (SSE) automatically encrypts data at rest using 256-bit AES encryption, which is transparent to applications and meets compliance requirements. This is a fundamental security control for protecting data stored in Azure Data Lake Storage Gen2.
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.
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Enable TLS 1.0 for compatibility with legacy clients
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse network security controls (firewalls) or legacy protocol compatibility (TLS 1.0) with actual data encryption mechanisms, leading them to select options that address access or connectivity rather than encryption of data at rest and in transit.
Detailed technical explanation
How to think about this question
Azure SSE is enabled by default for all new storage accounts and encrypts data at the storage node level before writing to disk, using Microsoft-managed keys or customer-managed keys (CMK) in Azure Key Vault. For data in transit, HTTPS (TLS 1.2+) ensures encryption between clients and Azure Storage endpoints, preventing man-in-the-middle attacks. RBAC and ACLs provide fine-grained access control but do not encrypt data themselves.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-203 question in full detail.
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: Enable Azure Storage Service Encryption (SSE) for data at rest — Azure Storage Service Encryption (SSE) automatically encrypts data at rest using 256-bit AES encryption, which is transparent to applications and meets compliance requirements. This is a fundamental security control for protecting data stored in Azure Data Lake Storage Gen2.
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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Question Discussion
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