- A
Azure Blob Storage
Azure Blob Storage is designed for storing large amounts of unstructured data, supports REST API access, and offers tiered storage (hot, cool, archive) to optimize costs.
- B
Azure Files
Why wrong: Azure Files provides fully managed file shares accessible via SMB and NFS protocols. It is more suited for shared file systems, not optimal for massive unstructured data via REST APIs.
- C
Azure Data Lake Storage Gen2
Why wrong: Azure Data Lake Storage Gen2 is built on Blob Storage and adds a hierarchical file system. It is ideal for big data analytics but may be unnecessary for the stated requirement for simple media storage without the need for POSIX permissions.
- D
Azure Disk Storage
Why wrong: Azure Disk Storage provides block-level storage volumes for Azure VMs. It is not designed for storing large amounts of unstructured data accessible via REST APIs.
AZ-305 Design data storage solutions Practice Question
This AZ-305 practice question tests your understanding of design data storage solutions. 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.
A company needs to store massive amounts of unstructured data, such as images and videos, for a media processing application. The data must be accessible via REST APIs and support tiered storage for cost optimization. Which Azure storage solution should they use?
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
Azure Blob Storage
Azure Blob Storage is the correct choice because it is designed for massive amounts of unstructured data (images, videos) and provides REST API access via HTTP/HTTPS. It also supports tiered storage (Hot, Cool, Cold, Archive) to optimize costs based on data access patterns, making it ideal for media processing workloads.
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.
- ✓
Azure Blob Storage
Why this is correct
Azure Blob Storage is designed for storing large amounts of unstructured data, supports REST API access, and offers tiered storage (hot, cool, archive) to optimize costs.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Azure Files
Why it's wrong here
Azure Files provides fully managed file shares accessible via SMB and NFS protocols. It is more suited for shared file systems, not optimal for massive unstructured data via REST APIs.
- ✗
Azure Data Lake Storage Gen2
Why it's wrong here
Azure Data Lake Storage Gen2 is built on Blob Storage and adds a hierarchical file system. It is ideal for big data analytics but may be unnecessary for the stated requirement for simple media storage without the need for POSIX permissions.
- ✗
Azure Disk Storage
Why it's wrong here
Azure Disk Storage provides block-level storage volumes for Azure VMs. It is not designed for storing large amounts of unstructured data accessible via REST APIs.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may choose Azure Data Lake Storage Gen2 because it also stores unstructured data, but they overlook that the question emphasizes REST API access and tiered storage for cost optimization, which are native to Blob Storage, while Data Lake Storage Gen2 is optimized for hierarchical namespace and analytics workloads, not general media storage.
Detailed technical explanation
How to think about this question
Azure Blob Storage uses a flat namespace with containers and blobs, accessed via REST API endpoints like `https://<storageaccount>.blob.core.windows.net/<container>/<blob>`. Its tiering leverages lifecycle management policies to automatically move blobs between Hot, Cool, Cold, and Archive tiers, where Archive has the lowest storage cost but a 15-hour rehydration latency. For media processing, this allows frequently accessed videos to stay in Hot while older assets are moved to Cool or Archive, reducing costs without manual intervention.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this AZ-305 question test?
Design data storage solutions — This question tests Design data storage solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Blob Storage — Azure Blob Storage is the correct choice because it is designed for massive amounts of unstructured data (images, videos) and provides REST API access via HTTP/HTTPS. It also supports tiered storage (Hot, Cool, Cold, Archive) to optimize costs based on data access patterns, making it ideal for media processing workloads.
What should I do if I get this AZ-305 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.
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 →
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Last reviewed: Jun 11, 2026
This AZ-305 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 AZ-305 exam.
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