The answer is atomic rename of directories, POSIX-like access control lists, and Azure Active Directory integration. These three features are core to Azure Data Lake Storage Gen2 because it combines Blob Storage with a hierarchical namespace, enabling file-system semantics like atomic directory operations and POSIX ACLs for fine-grained permission management, while AAD (Microsoft Entra ID) provides enterprise-grade authentication. On the DP-900 exam, this question tests your ability to distinguish Gen2’s unique capabilities from standard Blob Storage features—a common trap is confusing fixed-size blocks or geo-redundant storage as Gen2 features, when they are actually Blob Storage replication or storage options. Remember that Gen2 is built for big data analytics, so think “hierarchy, security, and atomic moves” to lock in the three correct answers.
DP-900 Practice Question: Describe considerations for working with non-relational data on Azure
This DP-900 practice question tests your understanding of describe considerations for working with non-relational data on azure. 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.
Which THREE of the following are features of Azure Data Lake Storage Gen2?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Integration with Azure Active Directory (Microsoft Entra ID)
Azure Data Lake Storage Gen2 combines Blob Storage with a hierarchical namespace. Option A is correct: it supports POSIX-like access control lists. Option B is correct: it integrates with Azure Active Directory (Microsoft Entra ID) for authentication. Option C is correct: it supports atomic rename of directories. Option D is wrong because fixed-size blocks are a feature of Blob Storage, but Data Lake Storage Gen2 uses hierarchical namespace, not fixed-size blocks. Option E is wrong because Geo-redundant storage (GRS) is a replication option, not a feature specific to Data Lake Storage Gen2.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Integration with Azure Active Directory (Microsoft Entra ID)
Why this is correct
It supports Azure AD-based authentication and authorization.
Related concept
Standard ACLs match source addresses.
✗
Geo-redundant storage (GRS)
Why it's wrong here
GRS is a replication option available for any Azure Storage account, not unique to Data Lake Storage Gen2.
✓
POSIX-compliant access control lists (ACLs)
Why this is correct
Data Lake Storage Gen2 supports ACLs for fine-grained permissions.
Related concept
Standard ACLs match source addresses.
✓
Atomic rename of directories
Why this is correct
The hierarchical namespace enables atomic directory rename operations.
Related concept
Standard ACLs match source addresses.
✗
Fixed-size block storage
Why it's wrong here
Fixed-size blocks are not a feature; Data Lake Storage Gen2 uses a hierarchical namespace.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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-900 question in full detail.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DP-900 ACL questions on filtering logic and placement.
Describe considerations for working with non-relational data on Azure — This question tests Describe considerations for working with non-relational data on Azure — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Integration with Azure Active Directory (Microsoft Entra ID) — Azure Data Lake Storage Gen2 combines Blob Storage with a hierarchical namespace. Option A is correct: it supports POSIX-like access control lists. Option B is correct: it integrates with Azure Active Directory (Microsoft Entra ID) for authentication. Option C is correct: it supports atomic rename of directories. Option D is wrong because fixed-size blocks are a feature of Blob Storage, but Data Lake Storage Gen2 uses hierarchical namespace, not fixed-size blocks. Option E is wrong because Geo-redundant storage (GRS) is a replication option, not a feature specific to Data Lake Storage Gen2.
What should I do if I get this DP-900 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DP-900 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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. A data lake stores Parquet files in Azure Data Lake Storage Gen2, organized by date (e.g., /data/2023/01/15/). Analysts frequently run queries that filter on a specific date range. Which feature of Azure Data Lake Storage Gen2 directly enables efficient directory-level operations like renaming or moving entire date partitions without rewriting files?
hard
✓ A.Hierarchical namespace
B.Blob soft delete
C.Change feed
D.Immutable storage
Why A: The hierarchical namespace feature in Azure Data Lake Storage Gen2 enables true directory-level operations, such as renaming or moving entire partitions (e.g., /data/2023/01/15/), by treating directories as first-class objects. This allows atomic metadata operations without rewriting or copying the underlying Parquet files, which is essential for efficient partition management in data lake scenarios.
Last reviewed: Jun 20, 2026
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This DP-900 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-900 exam.
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