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.
Which THREE of the following are requirements for using Azure SQL Database auto-failover groups? (Select three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The primary and secondary servers must be in different Azure regions.
Azure SQL Database auto-failover groups require the primary and secondary servers to be in different Azure regions to support geo-replication and disaster recovery. This ensures that if a regional outage occurs, the secondary server can take over, maintaining business continuity. The secondary server must have the same logical server name to allow applications to connect using the same listener endpoint after failover. Additionally, all databases in the failover group must use the same service tier to ensure consistent performance and capacity during failover.
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.
✗
Both servers must be in the same Azure region.
Why it's wrong here
They must be in different regions for geo-redundancy.
✓
The primary and secondary servers must be in different Azure regions.
Why this is correct
Auto-failover groups are designed for cross-region disaster recovery.
Related concept
Read the scenario before looking for a memorised answer.
✓
The secondary server must have the same logical server name.
Why this is correct
The logical server name is used for connection strings; it must be the same on both servers.
Related concept
Read the scenario before looking for a memorised answer.
✗
The databases must be in different elastic pools.
Why it's wrong here
They can be in the same or different elastic pools.
✓
The databases must use the same service tier.
Why this is correct
Consistency in service tier ensures proper failover behavior.
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 assume the secondary server must have a different logical server name, but in fact the listener endpoint uses the same server name, and the secondary server's actual name can be different; the requirement is that the logical server name used for the failover group must be the same on both sides.
Detailed technical explanation
How to think about this question
Auto-failover groups use the Availability Zones or paired regions concept in Azure, where the secondary server is typically deployed in a paired region to minimize latency and ensure data sovereignty. The failover group exposes a single read-write listener endpoint (e.g., `server.database.windows.net`) that automatically points to the primary server, and a read-only listener endpoint for reporting workloads. During a planned or unplanned failover, Azure automatically flips the DNS records to point to the secondary server, and all databases in the group fail over together as a unit, preserving transactional consistency.
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: The primary and secondary servers must be in different Azure regions. — Azure SQL Database auto-failover groups require the primary and secondary servers to be in different Azure regions to support geo-replication and disaster recovery. This ensures that if a regional outage occurs, the secondary server can take over, maintaining business continuity. The secondary server must have the same logical server name to allow applications to connect using the same listener endpoint after failover. Additionally, all databases in the failover group must use the same service tier to ensure consistent performance and capacity during failover.
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.
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Question Discussion
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