DBS-C01 Management and Operations Practice Question
A company is migrating its on-premises PostgreSQL database to Amazon Aurora PostgreSQL. The migration must have minimal downtime. Which THREE steps should be taken as part of the migration plan? (Select THREE.)
⚠ Common exam trap
Many candidates confuse enabling Multi-AZ as a migration requirement, when it is actually a high-availability feature unrelated to the migration process itself.
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 test migration to validate the process.
Performing a test migration validates the entire process, including schema compatibility, data integrity, and replication lag, before the actual cutover. This reduces the risk of unexpected failures during the live migration, which is critical for achieving minimal downtime.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Perform a test migration to validate the process.
Why this is correct
Testing ensures the migration works correctly before the actual cutover.
- ✗
Enable Multi-AZ on the Aurora cluster before migration.
Why it's wrong here
Multi-AZ is for high availability, not a prerequisite for migration.
- ✓
Update the application connection string to point to the Aurora cluster after cutover.
Why this is correct
After cutover, applications must connect to the new database.
- ✓
Use AWS DMS to perform a full load and then ongoing replication.
Why this is correct
Ongoing replication keeps the target in sync with minimal downtime.
- ✗
Disable automated backups on the Aurora cluster to improve performance.
Why it's wrong here
Backups are important for data safety and should not be disabled.
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Senior Network & Security Engineer · founder of Courseiva
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