- A
Cloud SQL Auth Proxy
Cloud SQL Auth Proxy provides secure, encrypted connectivity to source databases over the internet and is supported by DMS.
- B
Cloud Interconnect
Why wrong: Cloud Interconnect is a dedicated connection, not typically used for internet-based connectivity in this context.
- C
VPC Network Peering to on-premises network via Cloud VPN
Why wrong: This is possible but not the simplest for internet-based connectivity; Auth Proxy is more straightforward.
- D
Direct connection using Oracle Net Services over public IP with SSL
Why wrong: DMS does not support direct public IP connections; it requires a proxy or VPC peering.
Question 415 of 980
PCD Migrate Data Solutions Practice Question
This PCD practice question tests your understanding of migrate data solutions. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is planning to migrate an on-premises Oracle database to Cloud SQL for PostgreSQL. They want to use Google's Database Migration Service (DMS) for continuous migration with minimal downtime. Which source connectivity method does DMS support for connecting to the Oracle database over the internet?
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
✓
Cloud SQL Auth Proxy
Google's Database Migration Service (DMS) supports connecting to an on-premises Oracle database over the internet using Cloud SQL Auth Proxy. This method establishes an encrypted tunnel using the Cloud SQL Auth Proxy client, which authenticates via IAM and provides secure connectivity without requiring a public IP on the source database. It is the only supported connectivity method for internet-based migrations in DMS, enabling continuous migration with minimal downtime.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Cloud SQL Auth Proxy
Why this is correct
Cloud SQL Auth Proxy provides secure, encrypted connectivity to source databases over the internet and is supported by DMS.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Cloud Interconnect
Why it's wrong here
Cloud Interconnect is a dedicated connection, not typically used for internet-based connectivity in this context.
- ✗
VPC Network Peering to on-premises network via Cloud VPN
Why it's wrong here
This is possible but not the simplest for internet-based connectivity; Auth Proxy is more straightforward.
- ✗
Direct connection using Oracle Net Services over public IP with SSL
Why it's wrong here
DMS does not support direct public IP connections; it requires a proxy or VPC peering.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse the general connectivity options for Google Cloud (like Cloud Interconnect or VPN) with the specific methods supported by Database Migration Service for internet-based Oracle migrations, leading them to select a method that DMS does not actually support.
Detailed technical explanation
How to think about this question
Cloud SQL Auth Proxy works by running a lightweight client on the source environment that establishes an outbound connection to the Cloud SQL instance, using IAM-based authentication and TLS 1.2 encryption. This avoids exposing the Cloud SQL instance to the public internet, as the proxy only listens on localhost on the source side. In real-world scenarios, this is critical for compliance with regulations like PCI DSS or HIPAA, where direct database exposure is prohibited.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Migrate Data Solutions — study guide chapter
Learn the concepts, then practise the questions
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FAQ
Questions learners often ask
What does this PCD question test?
Migrate Data Solutions — This question tests Migrate Data Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Cloud SQL Auth Proxy — Google's Database Migration Service (DMS) supports connecting to an on-premises Oracle database over the internet using Cloud SQL Auth Proxy. This method establishes an encrypted tunnel using the Cloud SQL Auth Proxy client, which authenticates via IAM and provides secure connectivity without requiring a public IP on the source database. It is the only supported connectivity method for internet-based migrations in DMS, enabling continuous migration with minimal downtime.
What should I do if I get this PCD question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 2026
This PCD 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 PCD exam.
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