Question: In the context of Control and User Plane Separation (CUPS) for EPC nodes, who determines whether the Construction of 'End Marker' Packets is performed by the Control Plane (CP) function or the User Plane (UP) function?
Option 1: Network Configuration
Option 2: SGW-C (Serving and Packet Data Network Gateway-Control plane)
Option 3: PGW-U (Packet Data Network Gateway-User plane)
Option 4: UE (User Equipment)
Explanation: The correct answer is Network Configuration because, according to the specifications for CUPS in EPC nodes, the decision on whether the CP function or the UP function constructs end marker packets is dictated by how the network is configured. This highlights the importance of network configuration in managing and optimizing the separation of control and user plane functionalities in telecom networks.