Question: Under what conditions, as per security standards, is a Bearer Activation event generated for Lawful Interception?
Option 1: When a UE initiates a voice call over a 3GPP access network.
Option 2: Upon successful authentication of a User Equipment (UE) on the LTE network.
Option 3: During a Handover procedure from one eNodeB to another within the same E-UTRAN.
Option 4: When the ePDG handles Attach via GTP-based S2b, or detects Dedicated Bearer activation on S2b, or when PDN-GW detects Bearer Activation.
Explanation: This is correct because, as outlined in security standards for lawful interception, a Bearer Activation event is specifically triggered by three scenarios: (1) the ePDG handling Attach over a GTP-based S2b interface, (2) the detection of Dedicated Bearer activation on this same interface by the ePDG, or (3) the detection of a Bearer Activation at the PDN Gateway (PDN-GW). These conditions directly relate to the management and setup of bearers for non-3GPP accesses, highlighting the importance of monitoring these events for lawful interception purposes.