Quick Answer
The answer is the built-in Always On availability groups, as this feature provides the fastest failover within the same region for the Business Critical service tier. This is because Business Critical leverages synchronous replication between multiple replicas, ensuring zero data loss and automatic, rapid failover without any manual intervention. On the Microsoft Azure Database Administrator Associate DP-300 exam, this question tests your understanding of high-availability architecture, specifically how the Business Critical tier differs from General Purpose. A common trap is confusing zone-redundant configuration, which adds resilience across availability zones but does not improve failover speed within a single zone, or selecting geo-replication, which is designed for cross-region disaster recovery. Remember the key distinction: for the fastest intra-region failover, think "synchronous replicas in the same datacenter." A helpful memory tip is "Business Critical = Built-in Always On = Blazing fast failover."
This DP-300 practice question tests your understanding of plan and configure a high availability and disaster recovery environment. 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 need to ensure high availability for an Azure SQL Database in the Business Critical service tier. Which feature provides the fastest failover within the same region?
Built-in Always On availability groups
Provides synchronous replication and automatic failover.
Zone-redundant configuration
Why wrong: Improves resilience but not the primary failover mechanism within the tier.
Read scale-out
Why wrong: Offloads read workloads, not a failover feature.
Active geo-replication
Why wrong: For cross-region failover, not within the same region.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Built-in Always On availability groups
Option B is correct because Business Critical tier uses Always On availability groups with synchronous replication, providing fast automatic failover within the region. Option A is incorrect because zone-redundant configuration adds zone resilience but not faster failover within a zone. Option C is incorrect because read scale-out does not provide failover. Option D is incorrect because geo-replication is for cross-region failover.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Built-in Always On availability groups
Why this is correct
Provides synchronous replication and automatic failover.
Related concept
Read the scenario before looking for a memorised answer.
Zone-redundant configuration
Why it's wrong here
Improves resilience but not the primary failover mechanism within the tier.
Read scale-out
Why it's wrong here
Offloads read workloads, not a failover feature.
Active geo-replication
Why it's wrong here
For cross-region failover, not within the same region.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
Identify which DP-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Plan and configure a high availability and disaster recovery environment — study guide chapter
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FAQ
Plan and configure a high availability and disaster recovery environment — This question tests Plan and configure a high availability and disaster recovery environment — Read the scenario before looking for a memorised answer..
The correct answer is: Built-in Always On availability groups — Option B is correct because Business Critical tier uses Always On availability groups with synchronous replication, providing fast automatic failover within the region. Option A is incorrect because zone-redundant configuration adds zone resilience but not faster failover within a zone. Option C is incorrect because read scale-out does not provide failover. Option D is incorrect because geo-replication is for cross-region failover.
Identify which DP-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 2026
This DP-300 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 DP-300 exam.
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