Question: What is a key aspect of the W-AGF's role in enforcing QoS for user-plane packets in a Wireline 5G Access network, specifically when relaying between the 5G-RG/FN-RG and UPF?
Option 1: Ignoring N3 packet marking to prioritize all uplink traffic equally.
Option 2: Enforcing QoS based solely on downlink packet markings received over N2.
Option 3: Enforcing QoS corresponding to N3 packet marking, considering QoS requirements associated with such marking received over N2.
Option 4: Modifying N3 user-plane packet markings in the downlink to override QoS settings.
Explanation: This option correctly highlights a crucial function of the W-AGF in managing Quality of Service (QoS) for user-plane packets. By enforcing QoS based on N3 packet markings and considering the associated QoS requirements received over the N2 interface, the W-AGF ensures that the wireline access network aligns with the 5G Core Network's QoS policies, maintaining service quality for various types of traffic (e.g., voice, data, streaming).