Quick Answer
The correct answer is that the auto-failover group automatically fails over to West US and the read-write endpoint now points to West US. This behavior is driven by the built-in health monitoring of the auto-failover group, which detects the complete loss of the primary region and, after the configured grace period expires, triggers an automatic failover that updates both the read-write and read-only listener endpoints to point to the secondary region. On the Microsoft Azure Database Administrator Associate DP-300 exam, this concept tests your understanding of high availability and disaster recovery for Azure SQL Managed Instance, often appearing in scenario-based questions where a common trap is assuming manual intervention is required or that read-only listeners are not updated. Remember the key tip: with auto-failover groups, the entire endpoint mapping switches automatically—think “one failover, all endpoints move.”
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 are using Azure SQL Managed Instance with auto-failover groups. The primary region is East US, secondary is West US. The primary region experiences a full outage. How does the failover group behave?
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.
The failover group automatically fails over to West US and the read-write endpoint now points to West US.
Automatic failover switches endpoints.
You must manually initiate failover via the portal.
Why wrong: Automatic failover happens.
The read-only listener continues to point to West US.
Why wrong: Listener also switches.
The failover group remains in primary region and does not fail over.
Why wrong: Auto-failover will trigger.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The failover group automatically fails over to West US and the read-write endpoint now points to West US.
Option D is correct because auto-failover groups automatically fail over to the secondary region with automatic read-write endpoint switch. Option A is incorrect because failover is automatic if the grace period is exceeded. Option B is incorrect because automatic failover does not require manual initiation. Option C is incorrect because read-only listeners are also updated automatically.
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.
The failover group automatically fails over to West US and the read-write endpoint now points to West US.
Why this is correct
Automatic failover switches endpoints.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
You must manually initiate failover via the portal.
Why it's wrong here
Automatic failover happens.
The read-only listener continues to point to West US.
Why it's wrong here
Listener also switches.
The failover group remains in primary region and does not fail over.
Why it's wrong here
Auto-failover will trigger.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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.
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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: The failover group automatically fails over to West US and the read-write endpoint now points to West US. — Option D is correct because auto-failover groups automatically fail over to the secondary region with automatic read-write endpoint switch. Option A is incorrect because failover is automatic if the grace period is exceeded. Option B is incorrect because automatic failover does not require manual initiation. Option C is incorrect because read-only listeners are also updated automatically.
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.
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 2026
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