The answer is the Business Critical tier with zone redundancy and active geo-replication. This combination is the only Azure SQL Database offering that satisfies a compliance policy requiring both zone redundancy within the primary region and automated failover to a secondary region with no data loss. Zone redundancy distributes database replicas across availability zones in the primary region, ensuring high availability against a single-zone failure, while active geo-replication uses synchronous commit at the primary to maintain a fully synchronized secondary replica, enabling a failover without data loss. On the DP-300 exam, this scenario tests your understanding of the Business Critical tier’s unique support for both intra-region zone resilience and cross-region synchronous replication, often appearing as a trap where candidates mistakenly choose the General Purpose tier with geo-replication, which only offers asynchronous replication and potential data loss. Remember the mnemonic: “Business Critical is the only tier that can be both zoned and synced.”
DP-300 Plan and implement data platform resources Practice Question
This DP-300 practice question tests your understanding of plan and implement data platform resources. 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 deploying Azure SQL Database for a critical application. The compliance policy requires that the database be configured for zone redundancy in the primary region and have automated failover to a secondary region with no data loss. What Azure SQL Database offering and feature should you choose?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Business Critical tier with zone redundancy and active geo-replication
The Business Critical tier is the only Azure SQL Database tier that supports both zone redundancy within a region and active geo-replication with synchronous data replication to a secondary region. Zone redundancy ensures high availability within the primary region by distributing replicas across availability zones, while active geo-replication provides automated failover to a secondary region with no data loss because it uses synchronous commit at the primary and asynchronous replication to the secondary, but with the ability to fail over without data loss if the secondary is fully synchronized. This combination meets the compliance requirement for zero data loss during a regional 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.
✗
Basic tier with geo-replication
Why it's wrong here
Basic tier does not support zone redundancy or geo-replication.
✓
Business Critical tier with zone redundancy and active geo-replication
Why this is correct
Business Critical provides zone redundancy and active geo-replication with zero data loss.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
General Purpose tier with geo-replication
Why it's wrong here
General Purpose may have data loss during failover.
✗
Hyperscale tier with zone redundancy
Why it's wrong here
Hyperscale does not support zone redundancy.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the General Purpose tier's geo-replication (which is asynchronous and can lose data) with the Business Critical tier's active geo-replication (which supports synchronous replication for zero data loss), and they overlook that zone redundancy is only available in Business Critical and Hyperscale tiers, but Hyperscale lacks automated failover geo-replication.
Detailed technical explanation
How to think about this question
In the Business Critical tier, zone redundancy creates three replicas across availability zones using Always On Availability Groups with synchronous commit, ensuring no data loss within the primary region. Active geo-replication uses the same underlying technology to maintain a readable secondary replica in a paired region, and during a planned failover, the secondary can be promoted with zero data loss if the primary and secondary are fully synchronized; however, in an unplanned failover, there may be up to a few seconds of data loss if the secondary is not fully caught up, but the question assumes automated failover with no data loss, which is achievable with proper configuration and monitoring of replication lag.
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 DP-300 question in full detail.
Plan and implement data platform resources — This question tests Plan and implement data platform resources — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Business Critical tier with zone redundancy and active geo-replication — The Business Critical tier is the only Azure SQL Database tier that supports both zone redundancy within a region and active geo-replication with synchronous data replication to a secondary region. Zone redundancy ensures high availability within the primary region by distributing replicas across availability zones, while active geo-replication provides automated failover to a secondary region with no data loss because it uses synchronous commit at the primary and asynchronous replication to the secondary, but with the ability to fail over without data loss if the secondary is fully synchronized. This combination meets the compliance requirement for zero data loss during a regional failover.
What should I do if I get this DP-300 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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