ANS-C01 Network Design Practice Question
A company is designing a network architecture for a critical application that requires high availability across multiple AWS regions. The application uses an Application Load Balancer (ALB) in each region. Which TWO services can provide global routing and failover between the two ALBs?
⚠ Common exam trap
Watch out — candidates often think CloudFront or an NLB can provide cross-region failover, but CloudFront lacks health-check-based failover routing and an NLB is regional, while only Route 53 failover routing and Global Accelerator offer global traffic steering with health check integration.
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 failover routing and health checks
Amazon Route 53 with failover routing policy and health checks can route traffic to the primary ALB and automatically fail over to the secondary ALB in another region when the primary health check fails. This provides global DNS-based routing and failover across regions, meeting the high-availability requirement.
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 Route 53 with failover routing and health checks
Why this is correct
Route 53 can route traffic to the primary region and failover to the secondary based on health checks.
- ✗
AWS WAF
Why it's wrong here
AWS WAF is a firewall, not a routing service.
- ✗
Network Load Balancer (NLB)
Why it's wrong here
NLB is a regional load balancer and cannot provide global routing.
- ✗
Amazon CloudFront
Why it's wrong here
CloudFront can distribute content but does not provide active-active or active-passive routing to ALBs.
- ✓
AWS Global Accelerator
Why this is correct
Global Accelerator uses anycast IPs and can route traffic to the nearest healthy regional endpoint.
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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.