- A
Create a read replica in the same region for validation before cutover
Why wrong: A read replica is for read scaling, not migration.
- B
Use Cloud SQL's import functionality to load a mysqldump file
Why wrong: This would cause downtime and is not minimal; continuous replication is better.
- C
Set up continuous replication from the on-premises database to the Cloud SQL instance using Database Migration Service
DMS supports continuous replication to minimize downtime.
- D
Take a consistent snapshot of the on-premises database at the time of cutover
A consistent snapshot ensures data integrity before switching over.
- E
Disable binary logging on the on-premises database to reduce overhead
Why wrong: Binary logging is required for replication; disabling it would break replication.
PCDOE Manage Database Solutions Practice Question
This PCDOE practice question tests your understanding of manage database solutions. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 wants to migrate from an on-premises MySQL database to Cloud SQL. They need to minimize downtime and ensure data consistency. Which two steps should they include in the migration plan? (Choose TWO.)
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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
Set up continuous replication from the on-premises database to the Cloud SQL instance using Database Migration Service
Option C is correct because Database Migration Service (DMS) supports continuous replication using MySQL binary logs, enabling a near-zero-downtime migration by keeping the Cloud SQL instance synchronized with the on-premises database until cutover. Option D is correct because taking a consistent snapshot (e.g., using mysqldump with --single-transaction or a storage-level snapshot) at cutover ensures data consistency and provides a fallback point if the migration fails.
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.
- ✗
Create a read replica in the same region for validation before cutover
Why it's wrong here
A read replica is for read scaling, not migration.
- ✗
Use Cloud SQL's import functionality to load a mysqldump file
Why it's wrong here
This would cause downtime and is not minimal; continuous replication is better.
- ✓
Set up continuous replication from the on-premises database to the Cloud SQL instance using Database Migration Service
Why this is correct
DMS supports continuous replication to minimize downtime.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Take a consistent snapshot of the on-premises database at the time of cutover
Why this is correct
A consistent snapshot ensures data integrity before switching over.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Disable binary logging on the on-premises database to reduce overhead
Why it's wrong here
Binary logging is required for replication; disabling it would break replication.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that a simple import/export (like mysqldump) is sufficient for minimal downtime, but the key is that continuous replication (via DMS) is required to keep the target synchronized during the migration window.
Detailed technical explanation
How to think about this question
Database Migration Service uses MySQL's native binlog replication (based on the MySQL replication protocol) to stream changes from the source to Cloud SQL, allowing a cutover window of seconds. The consistent snapshot (option D) is typically taken using a tool like mysqldump with --master-data and --single-transaction, which records the binlog position for DMS to resume replication from that point, ensuring zero data loss. In practice, a real-world scenario might involve a multi-terabyte database where the initial dump takes hours, but continuous replication keeps the target in sync, allowing a final cutover with minimal interruption.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Visual reference
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.
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Manage Database Solutions — study guide chapter
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FAQ
Questions learners often ask
What does this PCDOE question test?
Manage Database Solutions — This question tests Manage Database Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set up continuous replication from the on-premises database to the Cloud SQL instance using Database Migration Service — Option C is correct because Database Migration Service (DMS) supports continuous replication using MySQL binary logs, enabling a near-zero-downtime migration by keeping the Cloud SQL instance synchronized with the on-premises database until cutover. Option D is correct because taking a consistent snapshot (e.g., using mysqldump with --single-transaction or a storage-level snapshot) at cutover ensures data consistency and provides a fallback point if the migration fails.
What should I do if I get this PCDOE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jul 4, 2026
This PCDOE 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 PCDOE exam.
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