Question 106 of 1,446
PCDE Migrate data solutions Practice Question
An engineer needs to connect Database Migration Service to a source MySQL database that has only a private IP address. The Cloud SQL destination is also private. What is the recommended method for DMS to connect to the source?
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
✓
Use VPC peering or Cloud SQL Auth Proxy
For private IP sources, VPC peering or Cloud SQL Auth Proxy can be used. Auth Proxy is recommended for secure connectivity without public IP exposure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a Cloud VPN tunnel with static IP
Why it's wrong here
A Cloud VPN tunnel with static IP requires the source database to have a public endpoint or a routable static IP address to terminate the VPN, but the source MySQL database has only a private IP address with no public exposure. This option is tempting because Cloud VPN is commonly used to securely extend on-premises networks to Google Cloud, and it would be correct if the source database had a static public IP or a VPN gateway with a public endpoint to establish the encrypted tunnel.
- ✗
Use Cloud NAT to provide outbound connectivity
Why it's wrong here
Cloud NAT enables outbound, not inbound connectivity to source.
- ✓
Use VPC peering or Cloud SQL Auth Proxy
Why this is correct
VPC peering enables private connectivity; Cloud SQL Auth Proxy provides secure tunnel.
- ✗
Use the source database's public IP with IP allowlisting
Why it's wrong here
The source has only private IP, so public IP is not available.
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Last reviewed: Jul 4, 2026
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.
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