AWS Certified CloudOps Engineer Associate SOA-C03 Practice Question

The target_status_code field shows the HTTP status that the target returned (or a dash if the target never replied). The target_processing_time field records how long, in seconds, the ALB waited for the target's response. Examining these two values together reveals whether the 504 was produced because a target took too long or did not respond at all. Fields such as request_processing_time or response_processing_time only measure time the ALB spent handling the client connection, and metadata like matched_rule_priority or chosen_cert_arn does not indicate target responsiveness.