CLF-C02 Cloud Technology and Services Practice Question
A global e-commerce company stores product images and videos in an Amazon S3 bucket located in the us-west-2 Region. Customers worldwide report slow page load times. The company also wants to protect its website against common distributed denial-of-service (DDoS) attacks without incurring additional costs for a dedicated DDoS protection service. Which AWS service should the company use to meet both requirements?
⚠ Common exam trap
Watch out — candidates often confuse AWS Global Accelerator with a CDN, but Global Accelerator does not cache content—it only optimizes network routing, so it cannot reduce latency for repeated requests to static assets like images and videos.
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 content at edge locations worldwide, reducing latency for global users. It also includes AWS Shield Standard at no additional cost, which provides always-on protection against common DDoS attacks (e.g., SYN floods, UDP reflection). This combination directly addresses both the slow page load times and the need for cost-effective DDoS protection.
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 S3 Transfer Acceleration
Why it's wrong here
S3 Transfer Acceleration speeds up uploads to an S3 bucket by optimizing the network path, but it does not cache content for user downloads, nor does it provide DDoS protection. It is not designed to reduce latency for end-user content delivery.
When this WOULD be correct
A company needs to upload large files to S3 from geographically distributed locations and wants to minimize upload latency. The question would specify that the performance issue is with uploads, not downloads, and DDoS protection is not a requirement.
- ✗
AWS Global Accelerator
Why it's wrong here
AWS Global Accelerator improves TCP/UDP traffic performance by directing users to the nearest healthy endpoint, but it does not cache content or provide application-layer DDoS protection. It focuses on network performance rather than content distribution.
When this WOULD be correct
A company needs to improve performance for global users by directing traffic to the nearest healthy endpoint (e.g., an Application Load Balancer) and requires static IP addresses for whitelisting. Global Accelerator would be correct because it provides anycast static IPs and traffic optimization without needing edge caching.
- ✓
Amazon CloudFront
Why this is correct
Amazon CloudFront caches content at edge locations globally, significantly reducing latency for users. It also includes AWS Shield Standard, which automatically protects against common DDoS attacks. This combination meets both the performance and security requirements without additional charges.
- ✗
AWS Shield Advanced
Why it's wrong here
AWS Shield Advanced provides enhanced DDoS protection and 24/7 support from the AWS DDoS Response Team, but it does not improve content delivery performance. It also incurs additional monthly costs and a usage commitment, which does not align with the requirement to avoid additional charges.
When this WOULD be correct
A company needs advanced DDoS protection (e.g., against layer 7 attacks, real-time visibility, and cost protection) and is willing to pay a monthly fee. The question would specify 'requires enhanced DDoS protection and has budget for a dedicated service'.
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
Amazon CloudFront caches content at edge locations globally, significantly reducing latency for users. It also includes AWS Shield Standard, which automatically protects against common DDoS attacks. This combination meets both the performance and security requirements without additional charges.
✗Amazon S3 Transfer AccelerationWrong answer — click to see why▾
Why this is wrong here
Amazon S3 Transfer Acceleration only speeds up uploads to S3, not content delivery to end users, and it does not provide DDoS protection.
★ When this WOULD be the correct answer
A company needs to upload large files to S3 from geographically distributed locations and wants to minimize upload latency. The question would specify that the performance issue is with uploads, not downloads, and DDoS protection is not a requirement.
Why candidates choose this
Candidates may think 'acceleration' implies faster content delivery globally and overlook that it only accelerates uploads, not downloads, and lacks DDoS protection.
✗AWS Global AcceleratorWrong answer — click to see why▾
Why this is wrong here
AWS Global Accelerator improves latency by routing traffic over the AWS global network, but it does not provide DDoS protection beyond the default AWS Shield Standard. The question requires DDoS protection without additional cost, and CloudFront includes AWS Shield Standard at no extra cost, while Global Accelerator does not offer built-in DDoS mitigation.
★ When this WOULD be the correct answer
A company needs to improve performance for global users by directing traffic to the nearest healthy endpoint (e.g., an Application Load Balancer) and requires static IP addresses for whitelisting. Global Accelerator would be correct because it provides anycast static IPs and traffic optimization without needing edge caching.
Why candidates choose this
Candidates may confuse Global Accelerator's global network optimization with CloudFront's CDN capabilities, assuming both provide similar performance benefits, and overlook that Global Accelerator lacks integrated DDoS protection features.
✗AWS Shield AdvancedWrong answer — click to see why▾
Why this is wrong here
AWS Shield Advanced is a paid service that provides enhanced DDoS protection, but the question explicitly requires no additional costs for a dedicated DDoS protection service. CloudFront includes AWS Shield Standard at no extra cost, meeting both requirements.
★ When this WOULD be the correct answer
A company needs advanced DDoS protection (e.g., against layer 7 attacks, real-time visibility, and cost protection) and is willing to pay a monthly fee. The question would specify 'requires enhanced DDoS protection and has budget for a dedicated service'.
Why candidates choose this
Candidates may think Shield Advanced is the only DDoS protection option, overlooking that CloudFront includes basic DDoS protection (Shield Standard) at no extra cost, and also provides global content delivery to reduce latency.
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?”
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
Related to this question
About these practice questions
One of 988 original CLF-C02 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
2 more ways this is tested on CLF-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company hosts a static website on Amazon S3. Users in different geographic locations experience high latency when accessing the website. The company wants to reduce latency for all users and also minimize the number of direct requests to the S3 bucket. Which AWS service should the company use?
medium- A.AWS Global Accelerator
- ✓ B.Amazon CloudFront
- C.Amazon Route 53 latency-based routing
- D.AWS Direct Connect
Why B: Amazon CloudFront is a content delivery network (CDN) that caches static content at edge locations worldwide, significantly reducing latency for users regardless of their geographic location. By serving content from the edge, CloudFront also offloads direct requests to the S3 bucket, reducing the load on the origin and potentially lowering costs.
Variation 2. A company hosts its website on a single Amazon EC2 instance in the us-east-1 Region. The website includes static assets such as images, CSS, and JavaScript files. Users in Europe and Asia report that the website loads slowly because the static assets must travel from the us-east-1 Region. The company wants to reduce latency for global users and decrease the load on the EC2 instance by serving static content from locations that are closer to the users. Which AWS service should the company use to meet these requirements?
medium- ✓ A.Amazon CloudFront
- B.AWS Global Accelerator
- C.Amazon Route 53 with latency-based routing
- D.Amazon S3 Transfer Acceleration
Why A: Amazon CloudFront is a content delivery network (CDN) that caches static assets (images, CSS, JavaScript) at edge locations worldwide. By serving content from edge locations closer to users in Europe and Asia, CloudFront reduces latency and offloads requests from the origin EC2 instance, decreasing its load. This directly meets the requirements for global latency reduction and reduced EC2 load.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.