Question 1,107 of 1,446
PCDE Migrate data solutions Practice Question
An organization needs to continuously replicate data from an on-premises PostgreSQL database to AlloyDB with minimal downtime during cutover. They have set up DMS continuous migration. During the cutover phase, what is the correct sequence of steps?
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 source, confirm DMS lag is 0, promote destination, update connection strings, verify application, keep source running read-only.
The standard cutover: quiesce writes, verify DMS lag is 0, promote (stop replication), update connection strings, verify app, and keep source for rollback.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Update connection strings first, then promote destination, then verify lag.
Why it's wrong here
Connection strings should be updated after promotion.
- ✗
Stop source database, promote destination, then update connection strings.
Why it's wrong here
Stopping source before verifying lag may cause data loss.
- ✓
Quiesce writes to source, confirm DMS lag is 0, promote destination, update connection strings, verify application, keep source running read-only.
Why this is correct
This is the correct cutover sequence.
- ✗
Promote target immediately, then verify lag, then update connection strings.
Why it's wrong here
Must verify lag is 0 before promoting.
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Last reviewed: Jul 4, 2026
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