Google PCA Practice Question: Analysing and Optimising Technical and Business Processes
This PCA practice question tests your understanding of analysing and optimising technical and business processes. 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 a large on-premises Oracle database (10 TB) to Cloud SQL for PostgreSQL. They need to minimise downtime and ensure data integrity. Which TWO services or tools should they use? (Choose TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Database Migration Service (DMS)
Database Migration Service (DMS) supports ongoing replication from Oracle to Cloud SQL for PostgreSQL, minimising downtime. Cloud Scheduler is not relevant. Dataflow can be used for streaming but is not the primary tool for database migration. Migrate for Compute Engine is for VM migration. Cloud SQL Auth Proxy is for secure connections, not migration.
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.
✗
Migrate for Compute Engine
Why it's wrong here
Migrate for Compute Engine is for VM migration, not database migration.
✗
Cloud Dataflow
Why it's wrong here
Dataflow can be used for streaming data pipelines but is not the standard tool for migrating an entire Oracle database to Cloud SQL.
✗
Cloud Scheduler
Why it's wrong here
Cloud Scheduler is for cron jobs, not database migration.
✓
Database Migration Service (DMS)
Why this is correct
DMS can perform continuous migration from Oracle to Cloud SQL for PostgreSQL with near-zero downtime.
Related concept
Standard ACLs match source addresses.
✓
Cloud SQL Auth Proxy
Why this is correct
Cloud SQL Auth Proxy provides secure connectivity to Cloud SQL instances, which is essential during migration to ensure encrypted data transfer.
Related concept
Standard ACLs match source addresses.
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.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
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 PCA ACL questions on filtering logic and placement.
Analysing and Optimising Technical and Business Processes — This question tests Analysing and Optimising Technical and Business Processes — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Database Migration Service (DMS) — Database Migration Service (DMS) supports ongoing replication from Oracle to Cloud SQL for PostgreSQL, minimising downtime. Cloud Scheduler is not relevant. Dataflow can be used for streaming but is not the primary tool for database migration. Migrate for Compute Engine is for VM migration. Cloud SQL Auth Proxy is for secure connections, not migration.
What should I do if I get this PCA 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 PCA ACL questions on filtering logic and placement.
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 →
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.
This PCA 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 PCA 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.