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PCDE Practice Question: Design innovative, scalable, and highly available cloud database solutions
An engineer needs to migrate a MySQL database to Cloud SQL with minimal downtime. Which TWO steps should be part of the migration plan? (Choose 2)
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
✓
Verify that the source MySQL version is compatible with Cloud SQL
DMS provides continuous replication for minimal downtime. Verifying compatibility ensures a smooth migration. Cloud VPN is not required for connectivity if using public IP. mysqldump causes downtime. Using a read replica is not applicable.
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 Cloud SQL read replica from the source
Why it's wrong here
Cloud SQL read replicas cannot be created from external instances.
- ✗
Perform a mysqldump and import the dump into Cloud SQL
Why it's wrong here
This approach causes downtime.
- ✓
Verify that the source MySQL version is compatible with Cloud SQL
Why this is correct
Compatibility check is essential for a successful migration.
- ✓
Use Database Migration Service (DMS) to set up continuous replication
Why this is correct
DMS supports live migration with minimal downtime.
- ✗
Set up a Cloud VPN tunnel between on-premise and GCP
Why it's wrong here
VPN not strictly required; public IP can be used with SSL.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCDE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCDE exam.