Cloud Digital Leader Why Cloud Technology Can Transform Business Practice Question
A global e-commerce platform needs to serve content with low latency to users worldwide. They want to cache static content at edge locations near users. Which Google Cloud service should they use?
⚠ Common exam trap
The trap is confusing Cloud DNS with Cloud CDN because both have 'Cloud' and relate to global delivery — but DNS resolves names while CDN caches and serves content at the edge.
Answer choices
Why each option matters
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 static content at Google's globally distributed edge locations, bringing content closer to users and reducing latency for worldwide audiences. It integrates with external HTTP(S) load balancing and Cloud Storage or Compute Engine backends, making it the correct choice for edge caching of static assets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cloud DNS
Why it's wrong here
Cloud DNS is a managed authoritative DNS service that translates human-readable domain names into IP addresses. It does not cache or serve application content, so it cannot reduce latency for content delivery. While fast DNS resolution helps a little, the core low-latency serving of content requires edge caching, not name resolution.
- ✓
Cloud CDN
Why this is correct
Cloud CDN uses Google's globally distributed edge points of presence (PoPs) to cache static and dynamic content close to users. It accelerates delivery by serving requests from the nearest edge instead of the origin, significantly reducing round-trip time. It supports TTL-based caching, cache invalidation, and signed URLs, making it the direct solution for low-latency global content delivery.
- ✗
Cloud Armor
Why it's wrong here
Cloud Armor provides DDoS protection and web application firewall (WAF) capabilities, not content caching. It applies security policies to filter malicious traffic before it reaches the origin or CDN, but it does not store or replicate content. Therefore, it cannot lower content delivery latency; it protects infrastructure instead.
- ✗
Cloud Storage
Why it's wrong here
Cloud Storage is a scalable object store for holding blobs, media, and static assets, but it does not have built-in edge caching. Requests go to regional or multi-regional buckets, which may be far from the user, causing higher latency. It can serve as a backend for Cloud CDN, but Cloud Storage alone fails to meet the low-latency global requirement.
Go deeper
Related to this question
Learn chapter
Cloud CDN and Google's Global Network
Key term
Google Cloud
Google Cloud is a suite of cloud computing services offered by Google that provides infrastructure, platform, and software solutions over the internet.
Key term
Cloud storage
Cloud storage is a service that lets you save data on remote servers accessed over the internet instead of on your computer's hard drive.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Google Cloud exam blueprint
This GCDL 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 GCDL exam.