- A
Use a separate DMS job to a different Cloud SQL instance for testing
This keeps the production migration untouched.
- B
Create a clone of the Cloud SQL instance (from the DMS target) and test on the clone
Cloning creates a separate instance from a snapshot, safe for testing.
- C
Stop the DMS job, test on the target, then resume
Why wrong: Stopping the job breaks CDC; resuming may cause data loss.
- D
Test directly on the DMS target instance without promotion; changes won't affect source
Why wrong: The target is continuously synced; writes to it may be overwritten.
- E
Promote the DMS job to make the Cloud SQL instance the primary, then re-create the job for production
Why wrong: Promotion is final; you cannot revert.
Question 472 of 980
PCD Practice Question: Manage a Solution that Can Span Multiple Database Systems
This PCD practice question tests your understanding of manage a solution that can span multiple database systems. 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 migrating a SQL Server database to Cloud SQL for SQL Server using Database Migration Service (DMS). They have created a continuous migration job with CDC. They need to test the migrated data before promotion without affecting the source. Which TWO actions should they take? (Choose 2 options.)
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 a separate DMS job to a different Cloud SQL instance for testing
To test without impacting source, they can create a clone of the Cloud SQL instance (or use a different instance) and promote the clone, but DMS does not support cloning directly. The recommended approach is to set up a separate DMS job to a different target instance for testing, or use the existing job and promote a test instance after taking a snapshot. However, the most practical options are: (1) Create a clone of the Cloud SQL instance from the DMS target, and (2) Use a separate DMS job to a test target. Among the options, 'Create a clone of the Cloud SQL instance from the DMS job' and 'Promote the DMS job to a test instance' are valid. But given DMS limitations, the typical answer is to use a separate DMS job or clone. I'll pick the two that align with GCP documentation: Create a clone of the Cloud SQL instance (from the target) and promote the DMS job to a separate instance (though DMS doesn't support multiple targets). Let's refine: 'Create a clone of the Cloud SQL instance and run a DMS job to that clone' is not an option. The best answers are: 'Use a separate DMS job to a different Cloud SQL instance for testing' and 'Promote the DMS job to a test instance, then re-create the job for production' — but promoting is one-time. I'll choose: B and D.
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.
- ✓
Use a separate DMS job to a different Cloud SQL instance for testing
Why this is correct
This keeps the production migration untouched.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Create a clone of the Cloud SQL instance (from the DMS target) and test on the clone
Why this is correct
Cloning creates a separate instance from a snapshot, safe for testing.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Stop the DMS job, test on the target, then resume
Why it's wrong here
Stopping the job breaks CDC; resuming may cause data loss.
- ✗
Test directly on the DMS target instance without promotion; changes won't affect source
Why it's wrong here
The target is continuously synced; writes to it may be overwritten.
- ✗
Promote the DMS job to make the Cloud SQL instance the primary, then re-create the job for production
Why it's wrong here
Promotion is final; you cannot revert.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which PCD exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Questions learners often ask
What does this PCD question test?
Manage a Solution that Can Span Multiple Database Systems — This question tests Manage a Solution that Can Span Multiple Database Systems — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use a separate DMS job to a different Cloud SQL instance for testing — To test without impacting source, they can create a clone of the Cloud SQL instance (or use a different instance) and promote the clone, but DMS does not support cloning directly. The recommended approach is to set up a separate DMS job to a different target instance for testing, or use the existing job and promote a test instance after taking a snapshot. However, the most practical options are: (1) Create a clone of the Cloud SQL instance from the DMS target, and (2) Use a separate DMS job to a test target. Among the options, 'Create a clone of the Cloud SQL instance from the DMS job' and 'Promote the DMS job to a test instance' are valid. But given DMS limitations, the typical answer is to use a separate DMS job or clone. I'll pick the two that align with GCP documentation: Create a clone of the Cloud SQL instance (from the target) and promote the DMS job to a separate instance (though DMS doesn't support multiple targets). Let's refine: 'Create a clone of the Cloud SQL instance and run a DMS job to that clone' is not an option. The best answers are: 'Use a separate DMS job to a different Cloud SQL instance for testing' and 'Promote the DMS job to a test instance, then re-create the job for production' — but promoting is one-time. I'll choose: B and D.
What should I do if I get this PCD question wrong?
Identify which PCD exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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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