Question: In a DOCSIS IP-CAN, how is Quality of Service (QoS) enforcement typically applied for multiple IP Flows that share the same service requirements?
Option 1: At the individual IP Flow level, based on OSI Layer 3 and Layer 4 header information.
Option 2: At the aggregated service flow level, encompassing all IP Flows with similar QoS needs.
Option 3: Through dynamic assignment of separate MAC addresses for each IP Flow.
Option 4: By prioritizing upstream over downstream traffic for all IP Flows.
Explanation: In a DOCSIS IP-CAN, QoS enforcement is not done at the individual IP Flow level but rather at the service flow level. Since each service flow is uni-directional and represents an aggregation of QoS needs for all the IP Flows it carries, enforcing QoS at this level ensures efficient management of network resources for multiple IP Flows with similar service requirements.