- A
Amazon S3 Transfer Acceleration
Why wrong: 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.
- B
AWS Global Accelerator
Why wrong: 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.
- C
Amazon CloudFront
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.
- D
AWS Shield Advanced
Why wrong: 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.
Quick Answer
The answer is Amazon CloudFront. This service is the correct choice because it functions as a content delivery network (CDN) with DDoS protection, caching product images and videos at edge locations worldwide to dramatically reduce latency for global users, while also including AWS Shield Standard at no extra cost to defend against common volumetric attacks like SYN floods and UDP reflection. On the AWS Certified Cloud Practitioner CLF-C02 exam, this question tests your understanding of how CloudFront solves two distinct problems—performance and security—with a single, cost-effective solution; a common trap is to select Amazon S3 Transfer Acceleration or a standalone WAF, but remember that CloudFront inherently bundles CDN capabilities with always-on DDoS mitigation. For a memory tip, think of CloudFront as your "front line" defense: it speeds up content delivery at the edge and shields your origin from attacks, all without a separate bill.
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 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?
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.
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 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.
- ✗
AWS Global Accelerator
- ✓
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.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
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.
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 routing, so it cannot reduce latency for repeated requests to static assets like images and videos.
Detailed technical explanation
How to think about this question
CloudFront integrates with AWS Shield Standard automatically, which uses deterministic packet filtering and rate-based heuristics to mitigate Layer 3/4 attacks at the edge. For static content, CloudFront caches objects at over 600 Points of Presence (PoPs) globally, serving requests from the nearest edge location rather than the origin S3 bucket in us-west-2, which can reduce latency by 50-80% for distant users. A subtle behavior: CloudFront can also serve dynamic content by establishing persistent connections to the origin, but for static assets, the cache hit ratio is critical for performance gains.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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 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.
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.
About these practice questions
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 →
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.
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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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