CLF-C02 Cloud Technology and Services Practice Question
A company has a web application deployed on AWS in the us-west-2 Region. The application is accessed by users across the globe, including Europe, Asia, and South America. The company wants to improve the application's performance for international users by reducing latency and packet loss. The solution must route user traffic over the AWS global network to the closest edge location. Which AWS service should the company use?
⚠ Common exam trap
Test-takers frequently confuse Amazon CloudFront's edge caching with Global Accelerator's network path optimization, assuming a CDN is always the best choice for reducing latency, but CloudFront does not improve the network path for non-cacheable traffic or dynamic API calls.
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
✓
AWS Global Accelerator
AWS Global Accelerator is the correct choice because it uses the AWS global network to route user traffic to the closest edge location via Anycast IP addresses, reducing latency and packet loss. It optimizes the path from users to the application by directing traffic to the nearest edge endpoint, then forwarding it over the AWS backbone to the application in us-west-2. This improves performance for international users without caching content, unlike a CDN.
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 it's wrong here
Amazon CloudFront is a content delivery network (CDN) that caches content at edge locations to improve delivery of static and dynamic web content. However, it is optimized for HTTP/HTTPS traffic and does not provide the same low-latency routing for non-HTTP protocols or for dynamic applications that cannot be cached. The scenario requires routing user traffic over the AWS global network to the closest edge location for any IP traffic, which is a capability of AWS Global Accelerator, not CloudFront.
When this WOULD be correct
A company wants to deliver static and dynamic web content (e.g., images, videos, API responses) with low latency and high transfer speeds by caching at edge locations. The solution must also provide DDoS protection and integrate with AWS WAF.
- ✓
AWS Global Accelerator
Why this is correct
AWS Global Accelerator is designed to improve the performance of global applications by directing user traffic over the AWS global network to the closest edge location. It uses anycast IP addresses and routes traffic to the optimal endpoint based on location, network conditions, and health. This reduces latency and packet loss for global users, making it the correct choice for the described requirements.
- ✗
Amazon Route 53 (with latency-based routing)
Why it's wrong here
Amazon Route 53 latency-based routing is a DNS-based routing policy that directs user requests to the AWS region with the lowest latency. However, DNS responses can be cached by intermediate resolvers, leading to suboptimal routing. Additionally, DNS routing only works at the DNS query level and does not directly optimize the network path for the actual traffic. AWS Global Accelerator provides more consistent and granular performance improvements.
When this WOULD be correct
A company wants to distribute traffic across multiple AWS regions based on the lowest latency for each user, without needing to optimize the network path beyond DNS resolution. For example, directing users to the closest regional endpoint for a stateless API.
- ✗
AWS Direct Connect
Why it's wrong here
AWS Direct Connect provides a dedicated private network connection from an on-premises data center to AWS, which can improve latency and security for traffic between the customer's network and AWS. However, it does not address the performance of global users accessing the application from different parts of the world. Direct Connect is typically used for hybrid cloud scenarios, not for improving global end-user experience.
When this WOULD be correct
A company has a hybrid cloud architecture with on-premises data centers and needs a consistent, low-latency, and secure connection to AWS resources (e.g., VPC) for workloads like real-time data replication or large-scale data transfer. The question would specify a need for a dedicated private link rather than global user traffic optimization.
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.
✓AWS Global AcceleratorCorrect answer▾
Why this is correct
AWS Global Accelerator is designed to improve the performance of global applications by directing user traffic over the AWS global network to the closest edge location. It uses anycast IP addresses and routes traffic to the optimal endpoint based on location, network conditions, and health. This reduces latency and packet loss for global users, making it the correct choice for the described requirements.
✗Amazon CloudFrontWrong answer — click to see why▾
Why this is wrong here
Amazon CloudFront is a content delivery network (CDN) that caches content at edge locations, but the question requires routing user traffic over the AWS global network to the closest edge location for all traffic (including dynamic content), not just caching. CloudFront does not optimize routing for non-cacheable traffic like API calls or dynamic content.
★ When this WOULD be the correct answer
A company wants to deliver static and dynamic web content (e.g., images, videos, API responses) with low latency and high transfer speeds by caching at edge locations. The solution must also provide DDoS protection and integrate with AWS WAF.
Why candidates choose this
Candidates often associate 'edge locations' and 'reducing latency' with CloudFront, but they overlook that CloudFront primarily caches content, whereas Global Accelerator optimizes network routing for all traffic types.
✗Amazon Route 53 (with latency-based routing)Wrong answer — click to see why▾
Why this is wrong here
Amazon Route 53 with latency-based routing directs traffic based on DNS resolution latency, but it does not route traffic over the AWS global network or use edge locations to optimize the path; it only directs users to the nearest endpoint based on DNS queries, which can still result in suboptimal routing over the public internet.
★ When this WOULD be the correct answer
A company wants to distribute traffic across multiple AWS regions based on the lowest latency for each user, without needing to optimize the network path beyond DNS resolution. For example, directing users to the closest regional endpoint for a stateless API.
Why candidates choose this
Candidates may confuse latency-based DNS routing with a global network accelerator, assuming that DNS-level latency optimization provides the same performance benefits as a service that actively routes traffic over AWS's private network.
✗AWS Direct ConnectWrong answer — click to see why▾
Why this is wrong here
AWS Direct Connect establishes a dedicated private network connection from on-premises to AWS, not from global users to edge locations. It does not route user traffic over the AWS global network to the closest edge location for latency reduction.
★ When this WOULD be the correct answer
A company has a hybrid cloud architecture with on-premises data centers and needs a consistent, low-latency, and secure connection to AWS resources (e.g., VPC) for workloads like real-time data replication or large-scale data transfer. The question would specify a need for a dedicated private link rather than global user traffic optimization.
Why candidates choose this
Candidates may think Direct Connect improves performance for all users because it provides a fast, reliable connection to AWS, but they overlook that it is a point-to-point link for specific on-premises locations, not a global edge network for end users.
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?”
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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.