The answer is that Global Accelerator can preserve the client IP address when using Network Load Balancer as an endpoint, but the key active-active consideration is its ability to assign different weights to endpoint groups across Regions. This weight-based traffic distribution allows granular control over how much traffic each Regional endpoint receives, enabling true active-active architectures where both Regions serve traffic simultaneously rather than one acting as a passive standby. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this concept tests your understanding of how Global Accelerator differs from Route 53 weighted routing—Global Accelerator operates at the network layer with anycast IPs, providing faster failover and consistent performance. A common trap is assuming active-active requires equal traffic split, but weighted endpoint groups support gradual rollouts or load balancing based on capacity. Memory tip: think of Global Accelerator as a smart traffic cop that can give different Regions different “speeds” (weights) without breaking client IP preservation when using NLB endpoints.
ANS-C01 Network Design Practice Question
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.
Which THREE of the following are valid considerations when designing a multi-Region active-active application using AWS Global Accelerator?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
You can assign different weights to endpoints in different Regions to control traffic distribution.
Option B is correct because AWS Global Accelerator allows you to assign different weights to endpoints in different Regions, enabling granular control over traffic distribution for active-active architectures. This is achieved through endpoint group weights, where you can adjust the proportion of traffic sent to each Regional endpoint group, supporting scenarios like gradual rollouts or load balancing across Regions.
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.
✗
Global Accelerator supports sticky sessions (session affinity) based on client IP.
Why it's wrong here
Sticky sessions are not a feature of Global Accelerator.
✓
You can assign different weights to endpoints in different Regions to control traffic distribution.
Why this is correct
Weights allow traffic splitting across endpoints.
Related concept
Read the scenario before looking for a memorised answer.
✓
Global Accelerator performs health checks on endpoints and routes traffic only to healthy endpoints.
Why this is correct
Health checks enable automatic failover.
Related concept
Read the scenario before looking for a memorised answer.
✓
Global Accelerator can preserve the client IP address when using Network Load Balancer as an endpoint.
Read the scenario before looking for a memorised answer.
✗
Global Accelerator provides a set of static IP addresses that are unique to each Region.
Why it's wrong here
Static IPs are anycast from the edge locations, not per-Region.
Common exam traps
Common exam trap: answer the scenario, not the keyword
AWS often tests the misconception that Global Accelerator provides per-Region unique static IPs, but the trap here is that the static IPs are global anycast addresses, not Regional, and candidates may confuse sticky sessions with Global Accelerator's lack of session affinity.
Detailed technical explanation
How to think about this question
Global Accelerator uses the AWS global network and anycast IPs to route traffic to the optimal endpoint based on health, latency, and endpoint weights. Under the hood, it leverages the Border Gateway Protocol (BGP) to announce the same set of static IPs from multiple edge locations, and traffic is steered to the appropriate Regional endpoint group via internal routing policies. In a real-world active-active scenario, you might set endpoint group weights to 50/50 for two Regions, but if one Region becomes unhealthy, Global Accelerator automatically shifts all traffic to the healthy Region, ensuring high availability.
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.
Network Design — This question tests Network Design — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: You can assign different weights to endpoints in different Regions to control traffic distribution. — Option B is correct because AWS Global Accelerator allows you to assign different weights to endpoints in different Regions, enabling granular control over traffic distribution for active-active architectures. This is achieved through endpoint group weights, where you can adjust the proportion of traffic sent to each Regional endpoint group, supporting scenarios like gradual rollouts or load balancing across Regions.
What should I do if I get this ANS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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.
Question Discussion
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