Question: What is the primary purpose of the MCPTT-IOPS-2 reference point in an Isolated Operation for Public Safety (IOPS) mode?
Option 1: To establish dedicated voice channels for emergency services
Option 2: For authentication and authorization of User Equipment (UE) in IOPS mode
Option 3: To manage unicast data transmissions within the IOPS network
Option 4: To communicate signaling related to MBMS bearers for multicast transmissions
Explanation: The MCPTT-IOPS-2 reference point specifically facilitates communication about the signaling of Multimedia Broadcast Multicast Service (MBMS) bearers, crucial for efficiently managing multicast transmissions within an Isolated Operation for Public Safety (IOPS) mode.