Question: Where can the uplink application's traffic redirection be enforced in a 5G System (5GS) architecture?
Option 1: Only in the Policy Control Function (PCF)
Option 2: Either in the Session Management Function (SMF) or directly in the User Plane Function (UPF)
Option 3: Only in the User Equipment (UE)
Option 4: Only in the Access and Mobility Management Function (AMF)
Explanation: In a 5G System architecture, uplink application's traffic redirection can be enforced either in the Session Management Function (SMF) or directly in the User Plane Function (UPF), depending on where the redirect destination is acquired or preconfigured. This allows for flexible management of user plane forwarding and redirection policies.