Question: What is the primary purpose of the 'UDP/MBMS-REPAIR' SDP protocol identifier defined in Multimedia Broadcast/Multicast Service (MBMS) protocols?
Option 1: To identify a combination of TCP and MBMS for streaming services
Option 2: To identify a protocol combination of UDP and FEC repair packets for error correction
Option 3: To specify the FMT string for general MBMS transmissions
Option 4: To define the interaction between User Equipment (UE) and the MBMS Gateway
Explanation: The correct answer is Option 2 because the 'UDP/MBMS-REPAIR' identifier specifically combines UDP with FEC repair packets. This combination ensures reliable transmission and error correction in multimedia broadcasts/multicasts, requiring low latency and high throughput.