ANS-C01 Network Design Practice Question
A company is designing a multi-region application with active-active configuration. They need a global DNS service that can route users to the nearest healthy endpoint and automatically failover to another region if an endpoint becomes unhealthy. Which AWS service should be used?
⚠ Common exam trap
The ANS-C01 exam often tests the distinction between DNS-based routing (Route 53) and network-layer acceleration (Global Accelerator), where candidates mistakenly choose Global Accelerator because it also supports health checks and failover, but the question explicitly asks for a 'global DNS service' which is Route 53's core function, not Global Accelerator's.
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
✓
Amazon Route 53 with latency-based routing and health checks
Amazon Route 53 with latency-based routing and health checks is the correct choice because it provides global DNS resolution that directs users to the endpoint with the lowest latency, while health checks automatically detect endpoint failures and trigger failover to a healthy region. This satisfies the active-active multi-region requirement by distributing traffic across multiple regions and ensuring automatic failover without manual intervention.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon CloudFront
Why it's wrong here
CloudFront is a content delivery network, not a DNS routing service.
- ✗
Elastic Load Balancer
Why it's wrong here
ELBs are regional and do not provide global routing or failover across regions.
- ✓
Amazon Route 53 with latency-based routing and health checks
Why this is correct
Route 53 latency routing directs traffic to the region with the lowest latency, and health checks enable failover.
- ✗
AWS Global Accelerator
Why it's wrong here
Global Accelerator uses anycast IPs and can route to healthy endpoints, but it does not provide DNS-level routing.
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JA
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.