ANS-C01 Network Design Practice Question
A company is designing a multi-region active-active application. They need to ensure that traffic is routed to the closest healthy region and that failover happens automatically. Which TWO services should be used together to achieve this?
⚠ Common exam trap
Test-takers frequently think Route 53 latency-based routing (D) alone is sufficient for automatic failover, but it relies on DNS caching and TTLs, which can delay failover by minutes, whereas Global Accelerator provides sub-second failover and is the recommended service for active-active multi-region traffic steering.
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
✓
AWS Global Accelerator with endpoint groups
AWS Global Accelerator (C) uses Anycast IPs to direct traffic to the closest healthy endpoint group, automatically rerouting traffic if a region becomes unhealthy. This provides fast regional failover and low-latency routing without DNS caching delays, making it ideal for active-active multi-region applications.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS Transit Gateway with inter-region peering
Why it's wrong here
For VPC connectivity, not user traffic routing.
- ✗
Amazon CloudFront with multiple origins
Why it's wrong here
Not for dynamic application routing.
- ✓
AWS Global Accelerator with endpoint groups
Why this is correct
Provides anycast IPs and health checks.
- ✓
Amazon Route 53 with latency-based routing
Why this is correct
Routes based on latency.
- ✗
AWS Direct Connect with multiple locations
Why it's wrong here
Not for traffic routing across regions.
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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.