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 runs a latency-sensitive web application on Compute Engine in us-east1. They want to improve response times for users in Europe and Asia without changing the application architecture. Which TWO actions should they take? (Choose 2.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable Cloud CDN on the load balancer
Cloud CDN caches static content at edge locations globally, reducing latency for users worldwide. Placing a load balancer in multiple regions (multi-region load balancing with proximity-based routing) directs users to the nearest backend region. Using only us-west1 would still leave European users far away. Cloud Armor is for security, not performance. Spot VMs are for cost savings, not latency.
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 preemptible VMs to reduce cost
Why it's wrong here
Preemptible VMs are for cost savings, not performance improvement.
✓
Enable Cloud CDN on the load balancer
Why this is correct
Cloud CDN caches static content at edge locations, improving latency for all users.
Related concept
Read the scenario before looking for a memorised answer.
✗
Deploy additional instances in us-west1
Why it's wrong here
us-west1 is still not close to Europe or Asia; better to deploy in Europe and Asia.
✓
Create a multi-region load balancer and deploy backends in europe-west1 and asia-east1
Why this is correct
Multi-region load balancing routes users to the nearest backend, reducing latency.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Cloud Armor to block high-latency requests
Why it's wrong here
Cloud Armor does not improve latency; it's a security service.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
Identify which PCA 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.
Analysing and Optimising Technical and Business Processes — This question tests Analysing and Optimising 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: Enable Cloud CDN on the load balancer — Cloud CDN caches static content at edge locations globally, reducing latency for users worldwide. Placing a load balancer in multiple regions (multi-region load balancing with proximity-based routing) directs users to the nearest backend region. Using only us-west1 would still leave European users far away. Cloud Armor is for security, not performance. Spot VMs are for cost savings, not latency.
What should I do if I get this PCA question wrong?
Identify which PCA 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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Question Discussion
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