Question 296 of 1,446
Manage a solution that can span multiple database technologies →mediumMultiple SelectObjective-mapped
PCDE Practice Question: Manage a solution that can span multiple database technologies
A company wants to migrate from an on-premises MySQL database to Cloud SQL. They need to minimize downtime and ensure data consistency. Which two steps should they include in the migration plan? (Choose TWO.)
⚠ Common exam trap
Google Cloud exams often test the misconception that a simple import/export (like mysqldump) is sufficient for minimal downtime, but the key is that continuous replication (via DMS) is required to keep the target synchronized during the migration window.
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
✓
Set up continuous replication from the on-premises database to the Cloud SQL instance using Database Migration Service
Database Migration Service (DMS) supports continuous replication using MySQL binary logs, enabling a near-zero-downtime migration by keeping the Cloud SQL instance synchronized with the on-premises database until cutover. Option D is correct because taking a consistent snapshot (e.g., using mysqldump with --single-transaction or a storage-level snapshot) at cutover ensures data consistency and provides a fallback point if the migration fails.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create a read replica in the same region for validation before cutover
Why it's wrong here
A read replica is for read scaling, not migration.
- ✗
Use Cloud SQL's import functionality to load a mysqldump file
Why it's wrong here
This would cause downtime and is not minimal; continuous replication is better.
- ✓
Set up continuous replication from the on-premises database to the Cloud SQL instance using Database Migration Service
Why this is correct
DMS supports continuous replication to minimize downtime.
- ✓
Take a consistent snapshot of the on-premises database at the time of cutover
Why this is correct
A consistent snapshot ensures data integrity before switching over.
- ✗
Disable binary logging on the on-premises database to reduce overhead
Why it's wrong here
Binary logging is required for replication; disabling it would break replication.
Visual reference
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Last reviewed: Jul 4, 2026
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