DP-203 Global data lake with low latency Practice Question
A multinational corporation is designing a data lake on Azure Data Lake Storage Gen2. The data must be accessible from multiple regions with low latency, but only one region needs writable access. The solution must also comply with data residency requirements. Which two features or configurations should be implemented? (Choose two.)
⚠ Common exam trap
A common mix-up: candidates confuse RA-GRS with GRS or fail to recognize that RA-GRS provides a read-only secondary endpoint, which is essential for low-latency reads without compromising the single-writable-region requirement.
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
✓
Use read-access geo-redundant storage (RA-GRS)
B is correct because read-access geo-redundant storage (RA-GRS) provides a secondary read-only endpoint in a paired region, enabling low-latency reads from multiple regions while maintaining a single writable primary region. This meets the data residency requirement because the secondary region is within the same geography, and RA-GRS ensures data is replicated asynchronously without allowing writes to the secondary.
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 hierarchical namespace on the storage account
Why it's wrong here
Hierarchical namespace is a feature of ADLS Gen2 but does not provide multi-region low-latency reads or data residency.
- ✗
Configure geo-replication with manual failover
Why it's wrong here
Manual failover does not provide automatic read access from secondary regions; it requires a manual process to promote the secondary.
- ✗
Use Azure Data Lake Storage Gen2 with locally redundant storage (LRS)
Why it's wrong here
LRS does not replicate data to another region, so it cannot provide multi-region low-latency reads.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The DP-203 exam frequently reuses these exact scenarios with slightly different constraints.
✓Use read-access geo-redundant storage (RA-GRS)Correct answer▾
✗Enable hierarchical namespace on the storage accountWrong answer — click to see why▾
Why this is wrong here
Hierarchical namespace is a feature of ADLS Gen2 but does not provide multi-region low-latency reads or data residency.
✗Configure geo-replication with manual failoverWrong answer — click to see why▾
Why this is wrong here
Manual failover does not provide automatic read access from secondary regions; it requires a manual process to promote the secondary.
✗Use Azure Data Lake Storage Gen2 with locally redundant storage (LRS)Wrong answer — click to see why▾
Why this is wrong here
LRS does not replicate data to another region, so it cannot provide multi-region low-latency reads.
Analysis generated from the official DP-203blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.