Quick Answer
The answer is AWS Global Accelerator. This is correct because Global Accelerator provides two static anycast IP addresses that act as a fixed entry point, enabling cross-region load balancing by routing traffic from the Application Load Balancer in us-east-1 to the Network Load Balancer in eu-west-1 through an endpoint group that references the NLB’s IP. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this scenario tests your understanding of how to achieve a static IP for cross-region traffic flow without relying on DNS-based resolution, which can change. A common trap is assuming an ALB or NLB alone can provide a static IP across regions, but only Global Accelerator offers fixed anycast addresses that work globally. Memory tip: think “Global Accelerator gives you a static front door that never changes, even when your backend moves across oceans.”
This ANS-C01 practice question tests your understanding of network design. 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 company is designing a multi-region architecture with an Application Load Balancer (ALB) in us-east-1 and a Network Load Balancer (NLB) in eu-west-1. They need to route traffic from the ALB to the NLB using a fixed IP address. Which AWS service should be used to provide a static IP for the NLB and enable cross-region load balancing?
AWS WAF
Why wrong: AWS WAF is a web application firewall, not a routing service.
Amazon CloudFront
Why wrong: CloudFront can use ALB as origin but does not provide static IPs for NLB.
AWS Transit Gateway
Why wrong: Transit Gateway connects VPCs but does not provide static IPs for load balancers.
AWS Global Accelerator
Global Accelerator provides static IPs and can route to NLB across regions.
Answer choices
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 a fixed entry point for traffic. It can route traffic from the ALB in us-east-1 to the NLB in eu-west-1 by using an endpoint group that includes the NLB's IP address, enabling cross-region load balancing with a static IP. This allows the ALB to forward traffic to the Global Accelerator's static IP, which then optimally routes to the NLB in the other region.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
AWS WAF
Why it's wrong here
AWS WAF is a web application firewall, not a routing service.
Amazon CloudFront
Why it's wrong here
CloudFront can use ALB as origin but does not provide static IPs for NLB.
AWS Transit Gateway
AWS Global Accelerator
Why this is correct
Global Accelerator provides static IPs and can route to NLB across regions.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often confuse Amazon CloudFront's ability to serve content with a static IP (via custom origins) with the need for a fixed IP that routes traffic from an ALB to an NLB across regions, overlooking that Global Accelerator is specifically designed for this use case with TCP/UDP traffic and static anycast IPs.
Detailed technical explanation
AWS Global Accelerator uses the AWS global network to route traffic to the optimal endpoint based on health, latency, and geography, leveraging Anycast IPs that are announced from multiple edge locations. Under the hood, it integrates with Network Load Balancers by using the NLB's IP address as a custom routing endpoint, allowing traffic to be directed to a specific IP in a different region. A real-world scenario is a gaming company that needs a stable IP for client connections while distributing traffic across regional NLBs for low-latency game sessions.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Network Design — This question tests Network Design — Read the scenario before looking for a memorised answer..
The correct answer is: AWS Global Accelerator — AWS Global Accelerator provides two static anycast IP addresses that serve as a fixed entry point for traffic. It can route traffic from the ALB in us-east-1 to the NLB in eu-west-1 by using an endpoint group that includes the NLB's IP address, enabling cross-region load balancing with a static IP. This allows the ALB to forward traffic to the Global Accelerator's static IP, which then optimally routes to the NLB in the other region.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This ANS-C01 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 ANS-C01 exam.
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