Question 811 of 820
DP-900 Practice Question: Identify considerations for relational data on Azure
A company uses Azure SQL Database with active geo-replication for disaster recovery. During a regional outage, the secondary database is promoted. After the primary region recovers, what is the best practice to re-establish geo-replication?
⚠ Common exam trap
A common trap is thinking you can simply reconfigure geo-replication without any failover process. However, after an unplanned failover, the only way to restore the original primary as the primary is through a planned failover, not by deleting or manually reassigning roles.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Perform a planned failover to make the old primary the primary again
Performing a planned failover properly fails back to the original primary and re-establishes geo-replication. Option A is wrong because deleting the old primary loses data and is unnecessary. Option B is wrong because while you can add the old primary as a secondary, it is not the best practice; a planned failover is preferred. Option C is wrong because automatic reversal of geo-replication direction is not supported; you must manually reconfigure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Delete the old primary database and create a new geo-replication
Why it's wrong here
Deleting the old primary loses data and is not necessary.
- ✗
Add the old primary as a secondary to the new primary
Why it's wrong here
Adding the old primary as a secondary is possible but not the best practice; a planned failover is preferred.
- ✗
Reverse the geo-replication direction automatically
Why it's wrong here
Automatic reversal of geo-replication direction is not supported; you must manually reconfigure.
- ✓
Perform a planned failover to make the old primary the primary again
Why this is correct
Performing a planned failover correctly fails back to the original primary and re-establishes geo-replication.
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Last reviewed: Jun 20, 2026
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