Question: What is the primary function of the IP PDN Connectivity Service in the Evolved Packet System?
Option 1: To provide emergency services to UEs.
Option 2: To transport individual service data flows (SDFs) between a UE and a PLMN external packet data network.
Option 3: To manage policy and charging control architecture for PDN connections.
Option 4: To aggregate multiple Service Data Flows (SDFs) into traffic flow aggregates for transport between a UE and a PLMN external packet data network.
Explanation: The IP PDN Connectivity Service is responsible for transporting traffic flow aggregates, which consist of one or more Service Data Flows (SDFs), between a UE and a PLMN external packet data network. This allows for efficient and aggregated transport of multiple SDFs over the same connection.