- A
Amazon CloudFront
Why wrong: Amazon CloudFront is a content delivery network (CDN) that delivers content from edge locations, but it uses a large pool of dynamic IP addresses, not a fixed set of static IPs. While it can help reduce latency, it cannot provide the static IP addresses required for firewall allowlisting.
- B
AWS Global Accelerator
AWS Global Accelerator uses the AWS global network to route user traffic to the nearest healthy endpoint, improving performance and reliability. It provides two static anycast IP addresses that remain fixed, allowing clients to add them to firewall allowlists. This meets both the latency and static IP requirements.
- C
Network Load Balancer
Why wrong: A Network Load Balancer (NLB) operates at the regional level and can handle TCP/UDP traffic with static IP addresses, but it is not a global service. The company needs a single set of static IPs that can route traffic to multiple Regions; an NLB cannot provide that global routing capability.
- D
Amazon Route 53 latency-based routing
Why wrong: Amazon Route 53 with latency-based routing can route users to the Region with the lowest latency, but it returns different IP addresses (e.g., the IPs of the load balancers in different Regions) depending on the user's location. This variability prevents clients from using a fixed set of static IPs for firewall allowlisting.
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 media company streams live video to a global audience. The application runs on Application Load Balancers in two AWS Regions (us-east-1 and eu-west-1). The company's clients require the use of a fixed set of static IP addresses for firewall allowlisting. The company needs to route user traffic to the nearest healthy endpoint to minimize latency. Which AWS service should the company use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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 provides two static Anycast IP addresses that serve as fixed entry points for traffic, which are then routed over the AWS global network to the nearest healthy endpoint (e.g., Application Load Balancer in us-east-1 or eu-west-1). This minimizes latency by directing users to the closest Region while preserving the static IPs required for firewall allowlisting. Unlike CloudFront, Global Accelerator does not cache content and is optimized for TCP/UDP traffic, making it ideal for live video streaming where low latency and static IPs are critical.
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 CloudFront
Why it's wrong here
Amazon CloudFront is a content delivery network (CDN) that delivers content from edge locations, but it uses a large pool of dynamic IP addresses, not a fixed set of static IPs. While it can help reduce latency, it cannot provide the static IP addresses required for firewall allowlisting.
- ✓
AWS Global Accelerator
Why this is correct
AWS Global Accelerator uses the AWS global network to route user traffic to the nearest healthy endpoint, improving performance and reliability. It provides two static anycast IP addresses that remain fixed, allowing clients to add them to firewall allowlists. This meets both the latency and static IP requirements.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Network Load Balancer
Why it's wrong here
A Network Load Balancer (NLB) operates at the regional level and can handle TCP/UDP traffic with static IP addresses, but it is not a global service. The company needs a single set of static IPs that can route traffic to multiple Regions; an NLB cannot provide that global routing capability.
- ✗
Amazon Route 53 latency-based routing
Why it's wrong here
Amazon Route 53 with latency-based routing can route users to the Region with the lowest latency, but it returns different IP addresses (e.g., the IPs of the load balancers in different Regions) depending on the user's location. This variability prevents clients from using a fixed set of static IPs for firewall allowlisting.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Amazon CloudFront's ability to use a custom origin with static IPs (via AWS WAF or origin shield) as providing static IPs for the client-facing side, but CloudFront's edge IPs are dynamic and not suitable for firewall allowlisting, whereas Global Accelerator explicitly provides two static Anycast IPs that remain fixed.
Detailed technical explanation
How to think about this question
AWS Global Accelerator uses Anycast IP addresses that are advertised from multiple AWS edge locations simultaneously, so traffic enters the AWS network at the closest edge point and is then routed over the AWS global backbone to the optimal Regional endpoint. This avoids the public internet and reduces jitter and packet loss, which is especially important for real-time video streaming. Under the hood, Global Accelerator leverages the same AWS global network infrastructure that powers CloudFront, but it operates at Layer 3/4 (network/transport) rather than Layer 7, making it suitable for non-HTTP protocols like RTMP or WebRTC used in live streaming.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
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: AWS Global Accelerator — AWS Global Accelerator provides two static Anycast IP addresses that serve as fixed entry points for traffic, which are then routed over the AWS global network to the nearest healthy endpoint (e.g., Application Load Balancer in us-east-1 or eu-west-1). This minimizes latency by directing users to the closest Region while preserving the static IPs required for firewall allowlisting. Unlike CloudFront, Global Accelerator does not cache content and is optimized for TCP/UDP traffic, making it ideal for live video streaming where low latency and static IPs are critical.
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.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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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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