Question 655 of 1,621
ANS-C01 Network Implementation Practice Question
A company is deploying a multi-region application and needs to route users to the nearest healthy endpoint. They are using Amazon Route 53 with latency-based routing and health checks. Users in Asia are sometimes routed to the US region even when the Asia endpoint is healthy. What is the most likely cause?
⚠ Common exam trap
A common mix-up: candidates assume latency-based routing always routes to the geographically closest region, but it actually routes based on measured network latency, and a failing health check overrides latency calculations by excluding the endpoint entirely.
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
✓
The health check for the Asia region endpoint is failing or misconfigured
Latency-based routing selects the endpoint with the lowest latency for the user. If users in Asia are routed to the US even when the Asia endpoint is healthy, the most likely cause is that the health check for the Asia endpoint is failing or misconfigured. When a health check fails, Route 53 considers the endpoint unhealthy and excludes it from latency-based routing, causing traffic to be sent to the next-best region (e.g., US).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The Asia region endpoint's Route 53 geolocation routing policy is misconfigured
Why it's wrong here
The company is using latency-based routing, not geolocation.
- ✓
The health check for the Asia region endpoint is failing or misconfigured
Why this is correct
If the health check fails, Route 53 excludes the unhealthy endpoint and routes to the next best latency.
- ✗
The TTL value for the DNS records is set too high
Why it's wrong here
TTL affects caching, not the routing decision itself.
- ✗
The DNS resolver used by users in Asia does not support latency-based routing
Why it's wrong here
Latency-based routing is fully supported by standard DNS resolvers.
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Last reviewed: Jul 4, 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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