Question: In A/Gb mode, what is the primary purpose of the MS Radio Access Capability information element sent by the MS to the SGSN?
Option 1: To request specific QoS (Quality of Service) for ongoing packet flows.
Option 2: To initiate a handover from GERAN to UTRAN/E-UTRAN.
Option 3: To update the BSS on the MS's current location area.
Option 4: To inform the BSS about the MS's radio capabilities (e.g., multislot capability, power class) for efficient radio resource handling.
Explanation: The correct answer is Option 4 because the MS Radio Access Capability information element provides the BSS with detailed information about the MS's radio access technologies and capabilities, enabling effective management of radio resources, especially in a multi-RAT environment like GERAN.