Network QoS (Quality of Service) policies involve various rules and criteria to manage and prioritize network traffic. Classification rules indeed specify particular characteristics like an FC (Forwarding Class) and a profile for the packets, meaning option A is true. Network policies are typically applied at physical ports to control the data flow, ensuring option B is correct. Match criteria can be based on specific fields such as dot1p, DSCP, and EXP fields in the packet headers, validating option D. However, classification is not limited to behavior-aggregate statements only; it can be more detailed and encompass multiple methods, making option C the incorrect statement.