The correct answer is to re-establish geo-replication from the new primary to the original primary. After a geo-replication failover during a regional outage, the original primary database is automatically converted into a secondary database, but the replication link is broken. To bring the original primary back online with minimal data loss, you simply reverse the direction by configuring the new primary to replicate back to the original primary, effectively failing back or re-adding it as a secondary. On the Microsoft Azure Database Administrator Associate DP-300 exam, this scenario tests your understanding of active geo-replication’s failover behavior and the manual steps required to restore the original topology. A common trap is assuming geo-replication auto-heals after an outage, but it does not—you must explicitly re-establish the link. Remember the memory tip: “Failover flips the roles, but you must flip the link back.”
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. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Your company has an Azure SQL Database with active geo-replication to a secondary region. During a regional outage, the secondary database becomes the primary. After the outage is resolved, you need to bring the original primary back online with minimal data loss and without creating a new secondary. What should you do?
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
✓
Re-establish geo-replication from the new primary to the original primary.
Option A is correct because after a failover, the original primary becomes a secondary. You can safely re-establish geo-replication by failing back to the original primary or simply adding it as a secondary. Option B is wrong because geo-replication is not automatically re-established. Option C is wrong because the original primary is still available as a secondary. Option D is wrong because you should not delete the original primary.
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.
✗
Automatically re-establish geo-replication by waiting for the outage resolution.
Why it's wrong here
Incorrect: Geo-replication does not automatically re-establish after failover.
✗
Restore the original primary from a backup and then re-establish geo-replication.
Why it's wrong here
Incorrect: No need to restore; the database is still available.
✗
Delete the original primary database and create a new secondary from the new primary.
Why it's wrong here
Incorrect: The original primary can still be used as a secondary.
✓
Re-establish geo-replication from the new primary to the original primary.
Why this is correct
Correct: The original primary becomes a secondary and can be re-synchronized.
Clue confirmation
The clue word "primary" in the question point toward this answer.
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 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.
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: Re-establish geo-replication from the new primary to the original primary. — Option A is correct because after a failover, the original primary becomes a secondary. You can safely re-establish geo-replication by failing back to the original primary or simply adding it as a secondary. Option B is wrong because geo-replication is not automatically re-established. Option C is wrong because the original primary is still available as a secondary. Option D is wrong because you should not delete the original primary.
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.
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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