AWS SAA-C03 · Question 29 · Domain 2.2: Highly Available Architectures
A web application is deployed across multiple Availability Zones behind an Application Load Balancer (ALB). The EC2 instances are in an Auto Scaling group. During a load test, the architect notices that instances in AZ-A are receiving significantly more traffic than instances in AZ-B, causing CPU overload in AZ-A. How can this be resolved?
Answer options:
Enable Cross-Zone Load Balancing on the ALB.
Increase the maximum size of the Auto Scaling group.
Change the Route 53 routing policy to Weighted.
Move all instances to a single Availability Zone.
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