The answer is to add an additional ALB in ap-southeast-1 and add it as an endpoint in the ap-southeast-1 endpoint group. This is correct because Global Accelerator uses anycast IPs to route traffic to the nearest endpoint group, but the endpoint itself must be physically located in that same Region to reduce latency; simply adding a new endpoint group in Asia pointing to the same us-east-1 ALB does not shorten the network path. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this question tests your understanding that Global Accelerator endpoint groups and their endpoints must reside in the same AWS Region—a common trap is assuming the anycast IP alone solves distance issues without deploying local infrastructure. The key memory tip is “local endpoints, local latency”: an endpoint group is just a routing target, not a magic shortcut—you must deploy your application in the Region where you want traffic to terminate.
ANS-C01 Network Implementation Practice Question
This ANS-C01 practice question tests your understanding of network implementation. 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 uses AWS Global Accelerator to improve performance for a web application hosted on EC2 instances behind an Application Load Balancer (ALB) in a VPC. The Global Accelerator has an endpoint group in the us-east-1 Region with the ALB as an endpoint. Users in Asia report high latency. The company creates a new endpoint group in ap-southeast-1 and adds the same ALB (which is still in us-east-1). However, users in Asia still experience high latency. What should the network engineer do to reduce latency for Asian users?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Add an additional ALB in ap-southeast-1 and add it as an endpoint in the ap-southeast-1 endpoint group
Global Accelerator uses anycast IPs and routes traffic to the nearest endpoint group. But if the ALB is only in us-east-1, traffic from Asia will still go to us-east-1. To reduce latency, the company needs to deploy the application in ap-southeast-1 and add a local ALB as an endpoint. Options A and C do not address the physical distance. Option D is incorrect because Global Accelerator endpoints can be ALBs, but cross-Region ALB is not supported (endpoint group and endpoint must be in same Region).
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.
✗
Change the endpoint in ap-southeast-1 to use the same ALB but with a cross-Region VPC peering
Why it's wrong here
Global Accelerator endpoint must be in the same Region as the endpoint group.
✗
Configure Global Accelerator to use weighted routing to direct more traffic to ap-southeast-1
Why it's wrong here
Traffic already goes to nearest endpoint group, but the ALB is far.
✓
Add an additional ALB in ap-southeast-1 and add it as an endpoint in the ap-southeast-1 endpoint group
Why this is correct
Deploying locally reduces latency.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Lambda@Edge to cache content at CloudFront edge locations in Asia
Why it's wrong here
CloudFront is different from Global Accelerator.
Common exam traps
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.
Detailed technical explanation
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.
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 ANS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Network Implementation — This question tests Network Implementation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Add an additional ALB in ap-southeast-1 and add it as an endpoint in the ap-southeast-1 endpoint group — Global Accelerator uses anycast IPs and routes traffic to the nearest endpoint group. But if the ALB is only in us-east-1, traffic from Asia will still go to us-east-1. To reduce latency, the company needs to deploy the application in ap-southeast-1 and add a local ALB as an endpoint. Options A and C do not address the physical distance. Option D is incorrect because Global Accelerator endpoints can be ALBs, but cross-Region ALB is not supported (endpoint group and endpoint must be in same Region).
What should I do if I get this ANS-C01 question wrong?
Identify which ANS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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