ANS-C01 Network Design Practice Question
A company is designing a multi-region active-active architecture with Amazon Route 53. The application is deployed behind Application Load Balancers (ALBs) in us-east-1 and eu-west-1. The company wants to minimize latency for users and provide automatic failover. Which routing policy should be used?
⚠ Common exam trap
The ANS-C01 exam often tests the misconception that geolocation routing is the best choice for minimizing latency, but geolocation routes based on political boundaries rather than actual network performance, which can lead to suboptimal routing.
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
✓
Latency-based routing policy
Latency-based routing policy is the correct choice because it directs traffic to the AWS region that provides the lowest latency for the end user, which aligns with the requirement to minimize latency. Additionally, Route 53 automatically performs health checks on the ALBs; if one region's ALB becomes unhealthy, Route 53 routes traffic to the healthy region, providing automatic failover in an active-active architecture.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Failover routing policy
Why it's wrong here
Failover routing is used for active-passive setups, not active-active.
- ✗
Geolocation routing policy
Why it's wrong here
Geolocation routing routes based on user location, not latency, and does not provide automatic failover.
- ✓
Latency-based routing policy
Why this is correct
Latency-based routing directs users to the endpoint with the lowest latency and supports health checks for automatic failover.
- ✗
Weighted routing policy
Why it's wrong here
Weighted routing distributes traffic based on weights, not latency, and does not provide automatic failover based on health checks.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.