DOP-C02 Resilient Cloud Solutions Practice Question
A company is building a global application that requires low-latency access to static content across multiple AWS Regions. The content changes infrequently. Which solution is MOST resilient and cost-effective?
⚠ Common exam trap
DOP-C02 often tests the difference between CDN (CloudFront) and other acceleration services like S3 Transfer Acceleration, causing candidates to choose the latter for global content delivery.
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
✓
Use Amazon CloudFront with an S3 bucket as origin
Amazon CloudFront with an S3 bucket as origin provides low-latency global content delivery by caching static content at edge locations worldwide. It is highly resilient because CloudFront automatically routes around failures, and cost-effective since it reduces load on origin and data transfer costs.
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 Amazon S3 Transfer Acceleration
Why it's wrong here
Amazon S3 Transfer Acceleration is designed to speed up uploads to S3 by routing traffic through AWS edge locations and optimized network paths, not to accelerate downloads or content delivery to end users. In a global application serving content, users would still retrieve objects directly from the S3 bucket in the origin Region, so latency remains high. It also adds per-GB transfer costs and provides no edge caching, making it unsuitable for this requirement.
- ✗
Set up a VPN to a single Region
Why it's wrong here
A VPN to a single Region creates an encrypted tunnel between your network and one AWS Region, typically for private, internal connectivity. All global user traffic would have to travel across the public internet to that single Region, producing high, unpredictable latency and a single point of failure. VPNs do not replicate or cache content at edge locations and introduce operational overhead for managing customer gateways, so they do not address global low-latency content delivery.
- ✗
Deploy EC2 instances in each Region with a global load balancer
Why it's wrong here
Deploying EC2 instances with a global load balancer introduces unnecessary compute overhead and operational complexity for static content that changes infrequently, failing to meet the cost-effectiveness requirement. This approach is tempting because a global load balancer is ideal for distributing traffic across regional compute resources for dynamic applications requiring active-active failover, where it would be the correct choice.
- ✓
Use Amazon CloudFront with an S3 bucket as origin
Why this is correct
Amazon CloudFront with an S3 bucket as origin is the intended AWS solution for low-latency global delivery of static content. CloudFront caches objects at hundreds of edge locations, so users receive data from the nearest edge POP rather than the origin, drastically reducing latency. The S3 bucket provides durable, cost-effective storage, and CloudFront minimizes origin requests via cache hits, reducing cost. This combination also improves resilience by absorbing traffic spikes at the edge and supports features like SSL, geo-restriction, and signed URLs.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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About these practice questions
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Amazon Web Services exam blueprint
This DOP-C02 practice question is part of Courseiva's free Amazon Web Services 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 DOP-C02 exam.