Question: What is the primary purpose of the MCData-FD-2 reference point in the context of Mission Critical Data (MCData) communication?
Option 1: To facilitate multicast messaging between multiple MCData clients.
Option 2: To enable unicast file transactions between the MCData server and an MCData client.
Option 3: To manage Quality of Service (QoS) parameters for MCData services.
Option 4: To authenticate MCData users across different network domains.
Explanation: The MCData-FD-2 reference point is specifically defined for unicast file transactions, allowing for direct communication between an individual MCData client and the MCData server, crucial for efficient and reliable transfer of files in mission-critical scenarios where targeted delivery is essential.