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Answer: Deploy an Application Load Balancer (ALB) with health checks in front of the EC2 instances and direct traffic through it from Route 53.
The correct answer is D. Creating an Application Load Balancer (ALB) with health checks in front of the EC2 instances and routing traffic to the ALB from Route 53 is the optimal solution. An ALB distributes incoming application traffic across multiple targets, such as EC2 instances. By integrating health checks, it ensures that only healthy instances receive traffic. This will prevent DNS queries from directing traffic to unhealthy instances, thereby avoiding timeout errors.
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A web application hosted on Amazon EC2 instances is experiencing occasional timeout errors due to DNS queries returning IP addresses of unhealthy instances. What solution should be implemented to resolve this issue?
A
Configure Route 53 with simple routing policy records for each EC2 instance, including health checks.
B
Set up Route 53 with failover routing policy records for each EC2 instance, including health checks.
C
Establish an Amazon CloudFront distribution using the EC2 instances as its origin and implement health checks for the instances.
D
Deploy an Application Load Balancer (ALB) with health checks in front of the EC2 instances and direct traffic through it from Route 53.
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