Question: In a GPRS/EPS setup for IMS, what determines the need for Policy and Charging Control at the GGSN/P-GW level?
Option 1: User's Subscription Profile alone
Option 2: Combination of provisioning and/or APN of the PDN connection
Option 3: Local Operator's Admission Control Function solely
Option 4: Type of Access Network (GERAN, UTRAN, or E-UTRAN)
Explanation: The correct answer is Option 2 because the GGSN/P-GW determines the need for Policy and Charging Control based on provisioning and/or the Access Point Name (APN) of the PDN connection, allowing for dynamic decision-making based on network configuration and the specific PDN connection being established.