Google PCA Practice Question: Analyze and optimize technical and business processes
This PCA practice question tests your understanding of analyze and optimize technical and business processes. 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 financial services company uses Cloud SQL for MySQL for a critical application. They need zero downtime during maintenance and automatic failover across zones. They configured a Cloud SQL instance with high availability (HA). During a recent regional outage, the application experienced 10 minutes of downtime. What should they add to improve availability?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a cross-region replica and promote on failure.
Option B is correct because a cross-region replica provides a read-replica in a different region that can be promoted to a primary instance during a regional outage, enabling recovery with minimal downtime. This addresses the scenario where a single-region HA configuration (which uses zonal redundancy within the same region) cannot survive a full regional outage, as occurred in the question. Promoting the replica is a manual or automated failover action that restores write capability in the secondary region, reducing downtime from 10 minutes to seconds or minutes depending on replication lag.
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.
✗
Configure a warm standby instance in another region using migration.
Why it's wrong here
Warm standby requires manual promotion and is not as reliable as managed replica.
✓
Create a cross-region replica and promote on failure.
Why this is correct
Cross-region replica can be promoted to a new primary to handle regional failures.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Cloud SQL Proxy with multiple endpoints.
Why it's wrong here
Cloud SQL Proxy improves connectivity but does not offer failover.
✗
Enable database flags for faster failover detection.
Why it's wrong here
Database flags can speed up failover but only within the same region.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume HA (zonal redundancy) protects against all outages, but the PCA exam tests understanding that HA is regional and cannot survive a full regional failure, requiring cross-region replicas for disaster recovery.
Detailed technical explanation
How to think about this question
Cloud SQL's HA configuration uses a primary and standby instance in different zones within the same region, with synchronous replication to ensure zero data loss on zonal failover. However, during a regional outage, both zones are affected, so cross-region replicas (asynchronous replication) are required; promoting a cross-region replica changes its role to primary, but replication lag must be considered to avoid data loss. In practice, you can use a managed failover script or Cloud Functions to automate promotion, and you may need to update application connection strings or use a global load balancer with DNS-based routing to redirect traffic.
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
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.
Analyze and optimize technical and business processes — This question tests Analyze and optimize technical and business processes — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a cross-region replica and promote on failure. — Option B is correct because a cross-region replica provides a read-replica in a different region that can be promoted to a primary instance during a regional outage, enabling recovery with minimal downtime. This addresses the scenario where a single-region HA configuration (which uses zonal redundancy within the same region) cannot survive a full regional outage, as occurred in the question. Promoting the replica is a manual or automated failover action that restores write capability in the secondary region, reducing downtime from 10 minutes to seconds or minutes depending on replication lag.
What should I do if I get this PCA 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 →
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.