AWS Certified Developer - Associate
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You have set up an Elastic Load Balancer (ELB) to distribute traffic among several EC2 instances. However, the ELB has flagged all of your EC2 instances in the target group as unhealthy. Despite this, you are still able to access the website directly by entering the IP addresses of the EC2 instances into your web browser.
What might be the causes for the ELB marking your instances as unhealthy? (Select two)
A
Your web-app has a runtime that is not supported by the Application Load Balancer
B
The route for the health check is misconfigured
C
The EBS volumes have been improperly mounted
D
ou need to attach Elastic IP to the EC2 instances
E
The security group of the EC2 instance does not allow for traffic from the security group of the Application Load Balancer