Question: In the context of Evolved Universal Terrestrial Radio Access Network (E-UTRAN), what is the primary purpose of the 'Layer 3 Information' container during handover procedures?
Option 1: To encrypt sensitive user data transmitted between the EPC and the RAN.
Option 2: To facilitate intra-LTE handovers within the same E-UTRAN network.
Option 3: To transparently pass radio-related information for inter-3GPP RAT handovers from SAE/LTE to GERAN A/Gb mode.
Option 4: To manage QoS parameters for dedicated bearers during initial attach procedures.
Explanation: The 'Layer 3 Information' container's primary purpose is its role in inter-3GPP Radio Access Technology (RAT) handovers, specifically from SAE/LTE to GERAN A/Gb mode, ensuring seamless mobility by exchanging necessary radio-related information between the handover target and source via the Evolved Packet Core (EPC), crucial in heterogeneous network environments.