Question: What protocol is utilized by the MCData-2 reference point, situated between the MCData server and the MCData user database, for managing data in a Mission Critical Data (MCData) environment?
Option 1: SIP (Session Initiation Protocol)
Option 2: HTTP (Hypertext Transfer Protocol)
Option 3: Diameter Management Application Protocol
Option 4: SS7 (Signaling System No. 7)
Explanation: In the context of MCData environments, efficient and standardized management of user data is crucial. The Diameter protocol, specifically its management application variant, is designed for such tasks in telecom networks, offering the necessary scalability and reliability for managing user data between network elements like the MCData server and the MCData user database.