The answer is multiple synchronous replicas (one primary, two secondary) in the same region. This is correct because the Business Critical service tier in Azure SQL Database is built on a SQL Server Always On availability group architecture, which automatically provisions three synchronous replicas within a single data center to guarantee high availability with zero data loss. On the DP-300 exam, this concept tests your understanding of the built-in HA mechanisms that are enabled by default, distinguishing them from optional features like zone redundancy or disaster recovery tools such as auto-failover groups. A common trap is confusing automatically enabled HA with manually configured DR features; remember that Business Critical’s three replicas are always there, while geo-replication and failover groups require explicit setup. For a quick memory tip, think “Business Critical = 3 replicas, no extra clicks.”
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. 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 planning high availability for an Azure SQL Database that runs an e-commerce application. The database uses the Business Critical service tier. Which TWO features are automatically enabled to provide high availability within a single region? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Automatic failover to a secondary replica if the primary becomes unavailable.
Options A and B are correct. Business Critical includes multiple replicas (one primary and two secondary) that are automatically managed, and zone-redundant configuration is optional but not automatic. Option C is wrong because active geo-replication is a separate DR feature. Option D is wrong because auto-failover groups are for DR. Option E is wrong because read scale-out is an optional feature, not automatic for HA.
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.
✓
Automatic failover to a secondary replica if the primary becomes unavailable.
Why this is correct
The service automatically fails over to a secondary replica within seconds.
Related concept
Read the scenario before looking for a memorised answer.
✓
Multiple synchronous replicas (one primary, two secondary) in the same region.
Why this is correct
Business Critical provides 4 replicas by default: 1 primary, 2 secondary, and 1 for backups.
Related concept
Read the scenario before looking for a memorised answer.
✗
Auto-failover groups with a secondary in another region.
Why it's wrong here
Auto-failover groups are a DR feature, not automatically enabled for HA.
✗
Active geo-replication to a paired region.
Why it's wrong here
Geo-replication is a separate feature for disaster recovery, not automatic high availability.
✗
Read scale-out with a readable secondary replica.
Why it's wrong here
Read scale-out is an optional configuration, not automatic.
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: Automatic failover to a secondary replica if the primary becomes unavailable. — Options A and B are correct. Business Critical includes multiple replicas (one primary and two secondary) that are automatically managed, and zone-redundant configuration is optional but not automatic. Option C is wrong because active geo-replication is a separate DR feature. Option D is wrong because auto-failover groups are for DR. Option E is wrong because read scale-out is an optional feature, not automatic for HA.
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.
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Question Discussion
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