Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company runs a multiplayer gaming application on Amazon EC2 instances in the us-east-1 Region. The application uses the UDP protocol for real-time communication between players and game servers. Players in Asia and Europe report high latency and packet loss. The company wants to improve performance by directing player traffic from the nearest edge location to the application over the AWS global network, without modifying the application code. 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) for fast delivery of static and dynamic web content over HTTP/HTTPS. It does not natively support UDP traffic, which is required by this application. CloudFront is best for caching and accelerating web-based content, not real-time UDP-based game traffic.
B
Best answer
AWS Global Accelerator
AWS Global Accelerator uses the AWS global network to improve the performance of TCP/UDP applications. It directs user traffic to the nearest edge location and then routes it over the AWS global backbone to the optimal regional endpoint, reducing latency and packet loss. This matches the requirement for UDP-based gaming application without application changes.
C
Distractor review
Amazon Route 53 latency routing
Amazon Route 53 latency routing is a DNS-based routing policy that directs users to the AWS region with the lowest latency based on DNS resolution. While it can help route players to a nearby region, it does not provide edge-based acceleration or improve the performance of traffic routed to a single region. It also does not reduce latency over the last mile or through ISP networks.
D
Distractor review
AWS Site-to-Site VPN
AWS Site-to-Site VPN is used to create a secure connection between an on-premises network and AWS VPC. It is not designed to accelerate end-user traffic from the internet or to improve performance for global users accessing a cloud application.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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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?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: AWS Global Accelerator — AWS Global Accelerator is designed to improve the performance of applications that use TCP or UDP by directing traffic to the nearest AWS edge location and then routing it over the AWS global network to the optimal endpoint. This reduces latency and jitter for real-time applications like multiplayer games. Amazon CloudFront is a content delivery network (CDN) optimized for caching HTTP/HTTPS content and does not natively support UDP acceleration. Amazon Route 53 latency routing directs DNS queries to the region with the lowest latency, but it does not use edge locations to accelerate traffic. AWS Site-to-Site VPN is used for connecting on-premises networks to the AWS cloud, not for globally accelerating end-user 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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