Question: Which network elements are required to implement MBMS Content Transfer functionality for EPS (Evolved Packet System), while others remain transparent?
Option 1: BM-SC, MME, S4-SGSN, and RNC
Option 2: BM-SC and MBMS-GW
Option 3: GGSN, eNodeB, and MBMS-GW
Option 4: SGSN, BSC, and eNodeB
Explanation: In the context of EPS for MBMS, only two key network elements need to implement functionality specifically for delivering MBMS Content Transfer. These are the BM-SC, responsible for rendering content appropriately for broadcast/multicast delivery, and the MBMS-GW, which distributes multicast traffic efficiently across the network. Other elements like MME, S4-SGSN, RNC, and eNodeB remain transparent to MBMS Content Transfer operations in EPS.