- A
Amazon CloudFront
Correct. Amazon CloudFront is a CDN that caches content at edge locations to deliver low latency and high throughput to users globally. It also offloads origin servers and provides DDoS protection via AWS Shield.
- B
AWS Global Accelerator
Why wrong: Incorrect. AWS Global Accelerator improves performance for TCP/UDP traffic by directing requests to the nearest healthy endpoint, but it does not cache content. It is used for non-HTTP protocols and to improve network path, not for static asset delivery.
- C
Amazon Route 53 latency-based routing
Why wrong: Incorrect. Amazon Route 53 latency-based routing directs users to the endpoint with the lowest latency, but it does not cache assets or offload traffic from the origin. It only handles DNS resolution, not content delivery.
- D
AWS WAF
Why wrong: Incorrect. AWS WAF is a web application firewall that helps protect web applications from common exploits. It does not cache content or improve content delivery performance. It can be used in conjunction with CloudFront but is not a CDN solution.
CLF-C02 Cloud Technology and Services Practice Question
This CLF-C02 practice question tests your understanding of cloud technology and services. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 media company hosts its website on Amazon EC2 instances in the us-east-1 Region. Static assets such as images, CSS, and JavaScript files are stored in an Amazon S3 bucket. Users across the globe report slow page load times due to high latency when fetching these assets. The company wants to deliver the static content with low latency and high transfer speeds to users worldwide, reduce the load on the EC2 instances, and add protection against common DDoS attacks. Which AWS service should the company use?
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
Amazon CloudFront
Amazon CloudFront is a content delivery network (CDN) that caches static assets (images, CSS, JavaScript) at edge locations worldwide, reducing latency for global users. It offloads requests from the EC2 origin by serving cached content directly from the edge, and it integrates with AWS Shield Standard to provide automatic protection against common DDoS attacks. This directly addresses the company's requirements for low latency, reduced EC2 load, and DDoS protection.
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.
- ✓
Amazon CloudFront
Why this is correct
Correct. Amazon CloudFront is a CDN that caches content at edge locations to deliver low latency and high throughput to users globally. It also offloads origin servers and provides DDoS protection via AWS Shield.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Global Accelerator
Why it's wrong here
Incorrect. AWS Global Accelerator improves performance for TCP/UDP traffic by directing requests to the nearest healthy endpoint, but it does not cache content. It is used for non-HTTP protocols and to improve network path, not for static asset delivery.
When this WOULD be correct
A company runs a gaming application on EC2 instances in multiple regions and needs to route users to the nearest healthy endpoint with low latency for real-time UDP traffic, while also providing static IP addresses for whitelisting.
- ✗
Amazon Route 53 latency-based routing
Why it's wrong here
Incorrect. Amazon Route 53 latency-based routing directs users to the endpoint with the lowest latency, but it does not cache assets or offload traffic from the origin. It only handles DNS resolution, not content delivery.
When this WOULD be correct
A company has multiple EC2 instances deployed in different AWS regions and wants to route user traffic to the region that provides the lowest latency for each user, without caching or DDoS protection requirements.
- ✗
AWS WAF
Why it's wrong here
Incorrect. AWS WAF is a web application firewall that helps protect web applications from common exploits. It does not cache content or improve content delivery performance. It can be used in conjunction with CloudFront but is not a CDN solution.
When this WOULD be correct
A company wants to protect its web application running on EC2 from SQL injection and cross-site scripting attacks, while also filtering malicious traffic. In that scenario, AWS WAF integrated with CloudFront or ALB would be the correct choice.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The CLF-C02 exam frequently reuses these exact scenarios with slightly different constraints.
✓Amazon CloudFrontCorrect answer▾
Why this is correct
Correct. Amazon CloudFront is a CDN that caches content at edge locations to deliver low latency and high throughput to users globally. It also offloads origin servers and provides DDoS protection via AWS Shield.
✗AWS Global AcceleratorWrong answer — click to see why▾
Why this is wrong here
AWS Global Accelerator improves performance for TCP/UDP traffic by routing over the AWS global network, but it does not cache static content or offload requests from EC2 instances like CloudFront does.
★ When this WOULD be the correct answer
A company runs a gaming application on EC2 instances in multiple regions and needs to route users to the nearest healthy endpoint with low latency for real-time UDP traffic, while also providing static IP addresses for whitelisting.
Why candidates choose this
Candidates may confuse Global Accelerator's global network optimization and DDoS protection with CloudFront's content delivery features, thinking it also caches static assets.
✗Amazon Route 53 latency-based routingWrong answer — click to see why▾
Why this is wrong here
Amazon Route 53 latency-based routing directs traffic to the AWS region with the lowest latency, but it does not cache static content or provide DDoS protection. It also does not reduce load on EC2 instances or accelerate content delivery for a single-region origin.
★ When this WOULD be the correct answer
A company has multiple EC2 instances deployed in different AWS regions and wants to route user traffic to the region that provides the lowest latency for each user, without caching or DDoS protection requirements.
Why candidates choose this
Candidates may confuse latency-based routing with content delivery acceleration, thinking that routing to the nearest region will solve latency issues, but it does not address caching or DDoS protection.
✗AWS WAFWrong answer — click to see why▾
Why this is wrong here
AWS WAF is a web application firewall that protects against common web exploits, but it does not provide content delivery acceleration or reduce latency for static assets. The question specifically requires low latency and high transfer speeds, which WAF does not address.
★ When this WOULD be the correct answer
A company wants to protect its web application running on EC2 from SQL injection and cross-site scripting attacks, while also filtering malicious traffic. In that scenario, AWS WAF integrated with CloudFront or ALB would be the correct choice.
Why candidates choose this
Candidates may see 'DDoS attacks' in the question and immediately think of WAF, but they overlook that the primary requirements are content delivery acceleration and latency reduction, which WAF does not provide.
Analysis generated from the official CLF-C02blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse AWS Global Accelerator with a CDN, but Global Accelerator does not cache content—it only optimizes network path routing, making it unsuitable for static asset delivery.
Detailed technical explanation
How to think about this question
CloudFront uses a global network of over 600 Points of Presence (PoPs) to cache static assets, reducing the round-trip time for users far from us-east-1. Under the hood, it supports origin shield to further reduce load on the S3 bucket by aggregating requests, and it integrates with AWS Shield Advanced for enhanced DDoS mitigation. In a real-world scenario, a media company with a global audience would see latency drop from hundreds of milliseconds to under 50 ms for cached assets, while EC2 instances handle only dynamic requests.
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.
TExam Day Tips
- 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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 |
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Cloud Technology and Services — This question tests Cloud Technology and Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Amazon CloudFront — Amazon CloudFront is a content delivery network (CDN) that caches static assets (images, CSS, JavaScript) at edge locations worldwide, reducing latency for global users. It offloads requests from the EC2 origin by serving cached content directly from the edge, and it integrates with AWS Shield Standard to provide automatic protection against common DDoS attacks. This directly addresses the company's requirements for low latency, reduced EC2 load, and DDoS protection.
What should I do if I get this CLF-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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 →
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Last reviewed: Jun 11, 2026
This CLF-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 CLF-C02 exam.
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