Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
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?
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
Best answer
Azure Data Lake Storage Gen2.
It provides hierarchical namespace and data lake semantics for analytics workloads.
B
Distractor review
Azure Files premium shares.
Azure Files is SMB/NFS file sharing, not the best design for petabyte-scale analytical data lakes.
C
Distractor review
Azure Table Storage.
Table Storage is a NoSQL key-value store, not a file-based analytical lake.
D
Distractor review
Azure Queue Storage.
Queue Storage is for messaging, not analytical storage.
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 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 4
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 5
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?
Question 6
A company is deploying a web application on Azure App Service. They need to guarantee that all traffic from the internet goes through a Web Application Firewall (WAF) before reaching the app. The solution must be cost-effective for a single application. Which Azure service should they place in front of the App Service?
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 is built on Blob Storage and adds hierarchical namespace support, ACLs, and analytics-oriented file system semantics.
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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