ANS-C01 Network Management and Operations Practice Question
A company is designing a multi-region active-active architecture using Application Load Balancers (ALBs) and AWS Global Accelerator. They need to ensure that traffic is distributed evenly across regions and that failover happens automatically. Which configuration should they use?
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
✓
Configure Global Accelerator with two endpoints (one per region) and set equal weights
Global Accelerator uses endpoint weights to distribute traffic. Setting equal weights for both regional endpoints ensures even distribution, and health checks automatically route traffic away from unhealthy regions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use Route 53 latency-based routing with health checks
Why it's wrong here
Route 53 latency-based routing does not provide active-active load balancing across regions with equal distribution; it routes to the lowest latency.
- ✗
Configure Global Accelerator with a single endpoint group containing both ALBs
Why it's wrong here
An endpoint group is regional; you need two endpoint groups, one per region.
- ✓
Configure Global Accelerator with two endpoints (one per region) and set equal weights
Why this is correct
Global Accelerator supports endpoint weights for traffic distribution and health checks for failover.
- ✗
Use a Network Load Balancer in each region and Route 53 weighted routing
Why it's wrong here
This adds complexity and does not leverage Global Accelerator's anycast IP for fast failover.
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