Question: What type of messages are typically contained within the NAS PDU information element as it is transferred between the Core Network (CN) and User Equipment (UE) without interpretation in the Radio Network Controller (RNC)?
Option 1: RANAP signalling messages for RNC configuration
Option 2: Mobility management, call control, session management, supplementary services, and short message service messages
Option 3: UE positioning data and RNC resource allocation messages
Option 4: LTE-specific bearer setup and QoS negotiation messages
Explanation: The NAS PDU typically encapsulates messages related to call control, session management, supplementary services, short message service for text messaging, and mobility management. These are crucial for managing the UE's communication sessions and movements without requiring interpretation at the RNC level, ensuring seamless connectivity and service provision.