Question 102 of 1,446
PCDE Migrate data solutions Practice Question
A company wants to migrate a self-managed PostgreSQL database to AlloyDB with minimal downtime. They plan to use Database Migration Service with continuous CDC. The source database is in a different region. Which THREE steps should they include in their cutover plan? (Choose 3 correct answers.)
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
✓
Quiesce writes to the source database.
Cutover plan: quiesce writes to source, confirm replication lag is 0, promote the destination, update connection strings, and keep source running read-only for rollback. Testing before cutover is important but not part of the cutover plan step. DMS can work across regions but may have increased lag. Deleting the source immediately is risky.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Run a full performance test on AlloyDB before cutover.
Why it's wrong here
Performance test should be done earlier, not during cutover window.
- ✓
Quiesce writes to the source database.
Why this is correct
Stop writes to prevent changes after cutover.
- ✓
Confirm replication lag is zero.
Why this is correct
Ensure all changes are replicated before promotion.
- ✗
Delete the source database immediately after promotion.
Why it's wrong here
Keep source for rollback; deletion is final.
- ✓
Promote the AlloyDB destination to make it the primary.
Why this is correct
Promotion makes the destination writable and stops replication.
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Last reviewed: Jul 4, 2026
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