Question: What is the primary function of the User Plane Function (UPF) in a 5G network?
Option 1: To manage the control plane and signaling between the UE and the network.
Option 2: To provide lawful intercept and traffic usage reporting capabilities.
Option 3: To perform packet routing, forwarding, and inspection, as well as enforce user plane policies and QoS handling.
Option 4: To handle only downlink packet buffering and downlink data notification triggering.
Explanation: The UPF is a critical component of the 5G network that performs various functions related to user plane traffic. Its primary function is to route, forward, and inspect packets, as well as enforce policies and QoS handling for user plane traffic. This includes supporting uplink classifier, branching point, and traffic forwarding within a 5G VN group, among other functionalities.