Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company is building a big data analytics platform that will process structured, semi-structured, and unstructured data using Azure Synapse Analytics and other tools. They need a storage layer that supports hierarchical namespaces and fine-grained access control at the directory level. Which Azure storage solution should they use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Azure Blob Storage
Blob Storage does not have a hierarchical namespace, making it less efficient for directory-level operations and fine-grained access control.
B
Best answer
Azure Data Lake Storage Gen2
ADLS Gen2 provides a hierarchical namespace and ACL support, enabling efficient data management and security at the directory level for big data analytics.
C
Distractor review
Azure Files
Azure Files is an SMB file share for lifting and shifting on-premises file servers, not designed for big data analytics workloads.
D
Distractor review
Azure Cosmos DB
Cosmos DB is a NoSQL database for transactional workloads, not a storage layer for analytical processing of large datasets.
Common exam trap
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.
Technical deep dive
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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A company is designing hub-and-spoke networking. Spoke VNets must use a central Azure Firewall for outbound internet traffic. Which two configurations are required?
Question 2
A company is designing private access to a PaaS database from workloads in a VNet. The database should not be reachable over its public endpoint. What should be recommended?
Question 3
A data platform must support analytical queries over petabytes of files in a data lake, while preserving hierarchical namespaces and fine-grained ACLs. Which storage service should you design around?
Question 4
A database workload has an RPO of 15 minutes and an RTO of 4 hours. Cost is more important than near-zero data loss. Which design is usually more appropriate than synchronous multi-region replication?
Question 5
A hub-and-spoke Azure network must centralize outbound inspection and still allow spokes to resolve private endpoint DNS names. Which two components are commonly required? (Choose 2.)
Question 6
A multinational company uses Microsoft Entra ID and several Azure subscriptions. Security administrators need to review privileged role assignments every month and require justification for continued access. Which design should be recommended?
FAQ
Questions learners often ask
What does this AZ-305 question test?
Standard ACLs match source addresses.
What is the correct answer to this question?
The correct answer is: Azure Data Lake Storage Gen2 — Azure Data Lake Storage Gen2 (ADLS Gen2) combines blob storage with a hierarchical namespace and POSIX-like ACLs, enabling granular access control at the directory and file level. It is the recommended storage for big data analytics with Azure Synapse. Standard Blob Storage lacks a hierarchical namespace. Azure Files is for SMB file shares. Cosmos DB is a NoSQL database, not a storage layer for analytics data lakes.
What should I do if I get this AZ-305 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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