There is a requirement to get the IP address and port of the backend instances which serve traffic sent via an AWS ELB. How can this be achieved.

Answer options:

A.Check the VPC Flow Logs
B.Check Cloudwatch metrics
C.Check the ELB Console. The data is present in the log section.
D.Enable ELB Access logs. Check the logs

Answer – D
The AWS documentation mentions the following
Elastic Load Balancing provides access logs that capture detailed information about requests sent to your load balancer. Each log contains information such as the time the request was received, the instance`s IP address, latencies, request paths, and server responses. You can use these access logs to analyze traffic patterns and to troubleshoot issues.
For more information on the ELB Log files , please visit the below URL:
http://docs.aws.amazon.com/elasticloadbalancing/latest/classic/access-log-collection.html