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 web application on Compute Engine behind a HTTP(S) Load Balancer. They want to reduce latency for users worldwide. Which Google Cloud service should they use?
Cloud CDN
Cloud CDN caches content at edge locations to reduce latency.
Cloud Armor
Why wrong: Cloud Armor provides DDoS protection and WAF, not caching.
Cloud NAT
Why wrong: Cloud NAT provides outbound internet for instances without public IPs.
Cloud VPN
Why wrong: Cloud VPN is for encrypted tunnels to on-premises.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Cloud CDN
Cloud CDN caches content at Google's edge locations, reducing latency for global users. Cloud Armor is for security, Cloud NAT for outbound connectivity, and Cloud VPN for site-to-site VPN.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Cloud CDN
Why this is correct
Cloud CDN caches content at edge locations to reduce latency.
Related concept
Static NAT maps one inside address to one outside address.
Cloud Armor
Why it's wrong here
Cloud Armor provides DDoS protection and WAF, not caching.
Cloud NAT
Cloud VPN
Why it's wrong here
Cloud VPN is for encrypted tunnels to on-premises.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
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.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PCA NAT questions on configuration and troubleshooting.
Analysing and Optimising Technical and Business Processes — study guide chapter
Learn the concepts, then practise the questions
Analysing and Optimising Technical and Business Processes practice questions
Targeted practice on this topic area only
All PCA questions
1,000 questions across all exam domains
Google Professional Cloud Architect study guide
Full concept coverage aligned to exam objectives
PCA practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise PCA questions linked to Managing Implementation and Ensuring Solution and Operations Reliability.
Practise PCA questions linked to Designing and Planning a Cloud Solution Architecture.
Practise PCA questions linked to Managing and Provisioning a Solution Infrastructure.
Practise PCA questions linked to Designing for Security and Compliance.
Practise PCA questions linked to Analysing and Optimising Technical and Business Processes.
Practise PCA questions linked to Design and plan a cloud solution architecture.
Practise PCA questions linked to Manage and provision cloud infrastructure.
Practise PCA questions linked to Design for security and compliance.
Practise PCA questions linked to Analyze and optimize technical and business processes.
Practise PCA questions linked to Manage implementation of cloud architecture.
Practise PCA questions linked to Ensure solution and operations reliability.
Practise PCA questions linked to PCA fundamentals.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Analysing and Optimising Technical and Business Processes — This question tests Analysing and Optimising Technical and Business Processes — Static NAT maps one inside address to one outside address..
The correct answer is: Cloud CDN — Cloud CDN caches content at Google's edge locations, reducing latency for global users. Cloud Armor is for security, Cloud NAT for outbound connectivity, and Cloud VPN for site-to-site VPN.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PCA NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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 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.