AZ-305 Design data storage solutions Practice Question
This AZ-305 practice question tests your understanding of design data storage solutions. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
You are designing a storage solution for a globally distributed application that requires low-latency read access from multiple regions. Which Azure storage solution should you recommend?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Cosmos DB with multi-region writes and multiple read regions
Azure Cosmos DB with multi-region writes and multiple read regions is the correct choice because it provides turnkey global distribution with single-digit-millisecond latency for reads and writes from any Azure region. This solution directly addresses the requirement for low-latency read access from multiple regions, as Cosmos DB automatically replicates data to all configured regions and offers multiple consistency models to balance performance and data freshness.
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 with read-access geo-redundant storage (RA-GRS)
Why it's wrong here
RA-GRS provides read access in a secondary region but with eventual consistency and potential latency.
✗
Azure SQL Database with active geo-replication
Why it's wrong here
Active geo-replication requires manual failover and is not optimized for low-latency reads from multiple regions.
✗
Azure Files with Azure File Sync
Why it's wrong here
Azure File Sync caches on-premises, not globally distributed for low-latency reads.
✓
Azure Cosmos DB with multi-region writes and multiple read regions
Why this is correct
Cosmos DB is designed for global distribution with low-latency reads and writes.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse RA-GRS (which provides read-only secondary access only during failover) with true active-active multi-region reads, leading them to choose Azure Blob Storage instead of Cosmos DB.
Detailed technical explanation
How to think about this question
Azure Cosmos DB achieves global distribution by replicating data across regions using a multi-master replication protocol, which allows any region to accept writes and reads with automatic conflict resolution via last-writer-wins (LWW) or custom conflict resolution policies. Under the hood, Cosmos DB uses a quorum-based commit protocol and offers five consistency levels (from strong to eventual), enabling developers to tune latency and consistency trade-offs. A real-world scenario is a social media application serving users worldwide, where Cosmos DB ensures that a user in Europe can read and write with low latency while a user in Asia sees near-real-time updates.
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 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 AZ-305 question in full detail.
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 Cosmos DB with multi-region writes and multiple read regions — Azure Cosmos DB with multi-region writes and multiple read regions is the correct choice because it provides turnkey global distribution with single-digit-millisecond latency for reads and writes from any Azure region. This solution directly addresses the requirement for low-latency read access from multiple regions, as Cosmos DB automatically replicates data to all configured regions and offers multiple consistency models to balance performance and data freshness.
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 →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.