SAP-C02 Design for New Solutions Practice Question
A company is designing a new application that must be highly available across multiple AWS Regions. The application will run on EC2 instances behind an Application Load Balancer. The company needs a DNS-based routing policy that routes users to the nearest healthy endpoint based on latency. Which Amazon Route 53 routing policy should be used?
⚠ Common exam trap
Test-takers frequently confuse 'latency-based routing' with 'geolocation routing' or 'geoproximity routing,' but the question explicitly asks for routing based on latency, not geographic location or proximity.
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 routing policy
Latency routing policy is correct because it directs traffic to the AWS Region that provides the lowest latency for the end user, based on historical latency data between the user's DNS resolver and the AWS endpoints. This meets the requirement for a DNS-based routing policy that routes users to the nearest healthy endpoint based on latency, while also supporting health checks to ensure traffic is only sent to healthy targets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Latency routing policy
Why this is correct
Latency routing policy routes traffic to the region that provides the lowest latency for the user based on historical latency data.
- ✗
Failover routing policy
Why it's wrong here
Failover routing policy is used for active-passive failover, not for latency-based routing.
- ✗
Weighted routing policy
Why it's wrong here
Weighted routing policy distributes traffic based on assigned weights, not on latency to the user.
- ✗
Simple routing policy
Why it's wrong here
Simple routing policy routes traffic to a single resource; it does not consider latency or health.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-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 SAP-C02 exam.