- A
Use pg_dump and pg_restore
Why wrong: Similar downtime; not zero-downtime.
- B
Use Database Migration Service with continuous replication
DMS supports homogeneous migration with minimal downtime via change data capture.
- C
Export data as CSV, import to Cloud SQL
Why wrong: CSV export/import causes downtime and doesn't handle incremental changes.
- D
Create a Cloud SQL read replica from on-premise
Why wrong: Cloud SQL read replicas can only be created from Cloud SQL instances, not on-premise.
Question 859 of 1,000
PCDOE Design and Plan Database Solutions Practice Question
This PCDOE practice question tests your understanding of design and plan database 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 team is migrating a large on-premise Oracle database to Cloud SQL for PostgreSQL. They need to minimize downtime and ensure data consistency. Which migration approach is recommended?
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
✓
Use Database Migration Service with continuous replication
Using Database Migration Service (DMS) with continuous replication provides near-zero downtime and maintains consistency.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 pg_dump and pg_restore
Why it's wrong here
Similar downtime; not zero-downtime.
- ✓
Use Database Migration Service with continuous replication
Why this is correct
DMS supports homogeneous migration with minimal downtime via change data capture.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
- ✗
Export data as CSV, import to Cloud SQL
Why it's wrong here
CSV export/import causes downtime and doesn't handle incremental changes.
- ✗
Create a Cloud SQL read replica from on-premise
Why it's wrong here
Cloud SQL read replicas can only be created from Cloud SQL instances, not on-premise.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Trap categories for this question
Similar concept trap
Similar downtime; not zero-downtime.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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. ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement. 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.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PCDOE ACL questions on filtering logic and placement.
- →
Design and Plan Database Solutions — study guide chapter
Learn the concepts, then practise the questions
- →
Design and Plan Database Solutions practice questions
Targeted practice on this topic area only
- →
All PCDOE questions
1,000 questions across all exam domains
- →
Google Professional Cloud DevOps Engineer study guide
Full concept coverage aligned to exam objectives
- →
PCDOE practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related PCDOE practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Design and Plan Database Solutions practice questions
Practise PCDOE questions linked to Design and Plan Database Solutions.
Manage Database Solutions practice questions
Practise PCDOE questions linked to Manage Database Solutions.
Migrate Database Solutions practice questions
Practise PCDOE questions linked to Migrate Database Solutions.
Design for Reliability, Scalability, and Disaster Recovery practice questions
Practise PCDOE questions linked to Design for Reliability, Scalability, and Disaster Recovery.
Bootstrapping a Google Cloud organization for DevOps practice questions
Practise PCDOE questions linked to Bootstrapping a Google Cloud organization for DevOps.
Managing service incidents practice questions
Practise PCDOE questions linked to Managing service incidents.
Managing Google Cloud costs practice questions
Practise PCDOE questions linked to Managing Google Cloud costs.
Building and implementing CI/CD pipelines practice questions
Practise PCDOE questions linked to Building and implementing CI/CD pipelines.
Implementing service monitoring strategies practice questions
Practise PCDOE questions linked to Implementing service monitoring strategies.
Optimizing service performance practice questions
Practise PCDOE questions linked to Optimizing service performance.
PCDOE fundamentals practice questions
Practise PCDOE questions linked to PCDOE fundamentals.
PCDOE scenario practice questions
Practise PCDOE questions linked to PCDOE scenario.
Practice this exam
Start a free PCDOE practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this PCDOE question test?
Design and Plan Database Solutions — This question tests Design and Plan Database Solutions — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Use Database Migration Service with continuous replication — Using Database Migration Service (DMS) with continuous replication provides near-zero downtime and maintains consistency.
What should I do if I get this PCDOE question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PCDOE ACL questions on filtering logic and placement.
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?
Standard ACLs match source addresses.
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 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.