A SysOps administrator must produce a report listing the number of bytes sent to and received from each member of an Application Load Balancer (ALB) target group. Which combination of actions should the administrator perform to achieve this? (Choose two.)
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Correct answer: Turn on access logging for the ALB and store the log files in an Amazon S3 bucket., Query the ALB access logs with Amazon Athena. Use the received_bytes and sent_bytes columns and aggregate totals grouped by the target port..
Why this is the answer
To get detailed byte-level data per target, enabling ALB access logging is essential. These logs, stored in an S3 bucket, contain granular information about each request, including receivedbytes and sentbytes. Amazon Athena can then be used to query these logs directly from S3. Grouping by the targetport (which identifies the specific instance within the target group) allows aggregation of the byte counts for each member. Installing the CloudWatch agent on instances collects instance-level metrics, not ALB traffic per target. CloudWatch dashboards with ProcessedBytes provide aggregate ALB metrics, not per-target details. Grouping by clientport would aggregate by the client initiating the request, not the target receiving it.
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