Question 752 of 1,446
PCDE Migrate data solutions Practice Question
A company is migrating a MySQL 5.7 database to Cloud SQL for MySQL 8.0 using Database Migration Service (DMS). The source database has binary logging disabled. The team needs to perform a continuous migration with minimal downtime. What must be done before creating the DMS migration job?
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
✓
Enable binary logging on the source MySQL instance.
DMS continuous migration requires binary logging enabled on the source to capture ongoing changes via CDC. Without it, DMS can only perform a one-time dump. Thus, enabling binary logging is a prerequisite.
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 Auth Proxy connection to the source.
Why it's wrong here
Cloud SQL Auth Proxy is used for connecting to Cloud SQL, not for source configuration.
- ✗
Create a service account with Cloud SQL Admin role.
Why it's wrong here
IAM roles are needed for DMS permissions, but not a prerequisite for CDC.
- ✓
Enable binary logging on the source MySQL instance.
Why this is correct
Binary logging must be enabled for DMS to support continuous (CDC) migration.
- ✗
Set up VPC peering between the source network and Cloud SQL.
Why it's wrong here
VPC peering is used for private IP connectivity, but it does not enable CDC.
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Last reviewed: Jul 4, 2026
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