The answer is the Business Critical tier with zone redundancy. This is correct because Business Critical uses a quorum-based commit process with synchronous replication to multiple replicas, ensuring that every transaction is fully committed on at least two nodes before acknowledging success, which guarantees zero data loss and enables automatic failover within seconds for OLTP workloads. On the DP-300 exam, this question tests your understanding of Azure SQL Database high availability tiers, and a common trap is confusing General Purpose’s asynchronous replication—which can lose data on failover—with Business Critical’s synchronous model. Remember that for zero data loss automatic failover seconds OLTP, think “sync for safety”: synchronous replication is the only way to guarantee no data loss, and zone redundancy adds resilience across datacenters. A useful memory tip is “BC for zero loss, GP for cost savings”—Business Critical commits in sync, General Purpose commits in async.
DP-300 Practice Question: Plan and configure a high availability and disaster recovery environment
This DP-300 practice question tests your understanding of plan and configure a high availability and disaster recovery environment. 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.
You need to design a high availability solution for an Azure SQL Database that supports an online transaction processing (OLTP) application. The solution must provide automatic failover within seconds in case of a node failure and guarantee zero data loss. Which deployment option should you choose?
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
Option B is correct because the Business Critical tier uses a quorum-based commit and synchronous replication to replicas, ensuring zero data loss on failover. Option A (General Purpose) uses asynchronous replication and may lose data. Option C (Hyperscale) uses a log-based service with buffer and may lose data on failover. Option D (Basic) does not provide automatic failover with zero data loss.
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 zone redundancy
Why it's wrong here
Basic tier does not support zone redundancy or zero data loss.
✗
General Purpose tier with zone redundancy
Why it's wrong here
General Purpose uses asynchronous replication and may have data loss.
✗
Hyperscale tier with zone redundancy
Why it's wrong here
Hyperscale does not guarantee zero data loss on failover.
✓
Business Critical tier with zone redundancy
Why this is correct
Business Critical provides synchronous replication and zero data loss.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
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.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
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 — This question tests Plan and configure a high availability and disaster recovery environment — 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 — Option B is correct because the Business Critical tier uses a quorum-based commit and synchronous replication to replicas, ensuring zero data loss on failover. Option A (General Purpose) uses asynchronous replication and may lose data. Option C (Hyperscale) uses a log-based service with buffer and may lose data on failover. Option D (Basic) does not provide automatic failover with zero data loss.
What should I do if I get this DP-300 question wrong?
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.
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 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.
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.