Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company runs a globally distributed web application on Amazon EC2 instances behind Network Load Balancers in two AWS Regions: us-east-1 and eu-west-1. Users around the world access the application over the internet. The company wants to improve latency for all users by directing each user to the nearest healthy application endpoint. Additionally, the company requires two static IP addresses that clients can use for firewall whitelisting and that do not change even if the underlying infrastructure changes. Which AWS service should the company use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Amazon CloudFront
Amazon CloudFront is a content delivery network (CDN) that caches static and dynamic content at edge locations to reduce latency. However, it is optimized for HTTP/HTTPS traffic and does not provide static IP addresses for TCP or UDP traffic. It also does not route traffic based on endpoint health in the same way as Global Accelerator. CloudFront can use custom domain names with alternate IPs, but those IPs are not static for the purpose of firewall whitelisting.
B
Best answer
AWS Global Accelerator
AWS Global Accelerator improves application performance by directing user traffic to the nearest healthy endpoint using the AWS global network. It provides two static anycast IP addresses that act as a fixed entry point, so clients can whitelist these IPs without worrying about changes. It supports TCP and UDP traffic and can route to endpoints in multiple Regions, making it an ideal choice for this use case.
C
Distractor review
Amazon Route 53 latency-based routing
Amazon Route 53 latency-based routing directs DNS queries to the AWS Region with the lowest latency for the user. While it helps improve latency, it does not provide static IP addresses for firewall whitelisting. The IP addresses of the underlying resources (like load balancers) can change over time, and Route 53 only controls DNS resolution, not the actual IP addresses that clients connect to.
D
Distractor review
AWS Direct Connect
AWS Direct Connect is a dedicated network connection from an on-premises data center to AWS. It is used to reduce network costs and increase bandwidth for hybrid workloads, not to improve latency for internet users globally. It does not provide static IP addresses for user-facing traffic or automatically route users to the nearest endpoint.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer needs to launch a test server for a new application prototype. The developer logs into the AWS Management Console, selects an Amazon EC2 instance type, configures the security group, and starts the instance. The instance is running within two minutes, and the developer did not need to submit a formal request to the company's IT procurement team or wait for approval from a cloud administrator. Which essential characteristic of cloud computing does this scenario best demonstrate?
Question 2
A solutions architect is planning a new web application on AWS. The workload will include 3 Amazon EC2 instances (t3.medium) running 24/7, an Application Load Balancer, and an Amazon RDS for MySQL db.t3.small database. The architect needs to estimate the monthly cost for the first year, considering different purchasing options (On-Demand, 1-year All Upfront Reserved Instance, and Compute Savings Plan). Which AWS tool should the architect use to create this estimate?
Question 3
A company's development team frequently needs temporary test environments. A developer can log into the AWS Management Console, select an Amazon EC2 instance type, configure storage, and launch the instance within minutes without any interaction with the IT infrastructure team. This capability is an example of which essential characteristic of cloud computing?
Question 4
A company's finance team needs to analyze AWS spending in detail. They require a report that includes hourly cost data for each AWS service, each individual resource (e.g., a specific EC2 instance), and any cost allocation tags applied. The team plans to export this data to an Amazon S3 bucket and then import it into a custom business intelligence (BI) analytics dashboard. Which AWS tool should the finance team use to generate this level of detailed cost data?
Question 5
A company uses AWS for its development environment. The finance team wants to set a monthly budget of $10,000. They want to receive an email notification when the actual costs reach 80% of the budget ($8,000) and again when costs exceed the budget. The team needs a managed AWS service that can automatically send these alerts without requiring custom code or third-party tools. Which AWS service should the team use?
Question 6
A company uses AWS Organizations to manage multiple accounts. The security team needs to enforce a policy that restricts SSH access (port 22) from the internet (0.0.0.0/0) in all VPCs across all accounts. The team wants to centrally define the allowed rules and automatically apply them to newly created VPCs and security groups, while also automatically remediating any existing non-compliant security groups. Which AWS service should the team use?
FAQ
Questions learners often ask
What does this CLF-C02 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: AWS Global Accelerator — AWS Global Accelerator is the correct service for this scenario. It uses the AWS global network to route traffic to the nearest healthy endpoint, improving latency and performance. It also provides two static anycast IP addresses that remain fixed, simplifying firewall whitelisting and DNS management. Amazon CloudFront is a CDN for caching content at edge locations, not for TCP/UDP traffic routing with static IPs. Amazon Route 53 latency routing can direct traffic to the nearest region but does not provide static IPs for whitelisting, and IP addresses can change if resources are replaced. AWS Direct Connect is a dedicated network connection from on-premises to AWS and does not address global user latency or provide static IPs for internet traffic.
What should I do if I get this CLF-C02 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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