Question: What is a key implication for the network when bearer plane resources are set up after the start of MBMS (Multimedia Broadcast/Multicast Service) session data transmission?
Option 1: The network must buffer all session data until resources are fully established to prevent any loss.
Option 2: The network is not required to buffer session data, and some data loss can be expected during setup.
Option 3: MBMS service will automatically pause until all bearer plane resources are fully allocated.
Option 4: UTRAN (Universal Terrestrial Radio Access Network) will reject the session if resources aren't pre-allocated.
Explanation: According to MBMS architecture, when bearer plane resources are set up after session data transmission has begun, the network is under no obligation to buffer the incoming session data. This implies that any data transmitted before the resources are fully in place may be lost, highlighting the importance of timely resource allocation for minimizing data loss in MBMS transmissions.