This PCDOE practice question tests your understanding of optimizing service performance. 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 serves static assets (images, CSS) to global users. Users in distant regions experience slow load times. Which service should they use to optimize delivery?
Cloud CDN
Cloud CDN caches static content at global edge locations, reducing latency for distant users.
Cloud Load Balancing
Why wrong: Load balancing distributes traffic but does not cache content at edge locations.
Cloud NAT
Why wrong: Cloud NAT enables outbound internet access for instances, not caching.
Cloud Armor
Why wrong: Cloud Armor provides DDoS protection and WAF, not content caching.
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 (Content Delivery Network) caches static assets (images, CSS) at edge locations worldwide, reducing latency for distant users by serving content from a nearby point of presence (PoP). This directly addresses slow load times caused by geographic distance, as the origin server is no longer the sole source of delivery.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 static content at global edge locations, reducing latency for distant users.
Related concept
Read the scenario before looking for a memorised answer.
Cloud Load Balancing
Why it's wrong here
Load balancing distributes traffic but does not cache content at edge locations.
Cloud NAT
Why it's wrong here
Cloud NAT enables outbound internet access for instances, not caching.
Cloud Armor
Why it's wrong here
Cloud Armor provides DDoS protection and WAF, not content caching.
Common exam traps
Google Cloud often tests the distinction between caching (CDN) and load balancing, where candidates mistakenly think distributing traffic globally (Cloud Load Balancing) will also cache content, but load balancing alone does not reduce latency for static assets without edge caching.
Detailed technical explanation
Cloud CDN leverages Google's global edge network, using anycast routing to direct users to the nearest edge cache. When a cache miss occurs, the edge fetches content from the origin (e.g., Cloud Storage or an HTTP load balancer) and caches it based on Cache-Control headers. A subtle behavior: Cloud CDN respects the `stale-while-revalidate` directive, allowing it to serve stale content while asynchronously fetching a fresh version, which can improve perceived performance during origin load spikes.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
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FAQ
Optimizing service performance — This question tests Optimizing service performance — Read the scenario before looking for a memorised answer..
The correct answer is: Cloud CDN — Cloud CDN (Content Delivery Network) caches static assets (images, CSS) at edge locations worldwide, reducing latency for distant users by serving content from a nearby point of presence (PoP). This directly addresses slow load times caused by geographic distance, as the origin server is no longer the sole source of delivery.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 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.
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