Question: In a 5G network, what protocol is used for reliable transport of signaling messages over IP transport between the gNB (gNodeB) and AMF (Access and Mobility Management Function) on the NG-C interface?
Option 1: TCP (Transmission Control Protocol)
Option 2: UDP (User Datagram Protocol)
Option 3: SCTP (Stream Control Transmission Protocol)
Option 4: HTTP (Hypertext Transfer Protocol)
Explanation: SCTP is specifically designed to provide reliable, sequenced delivery of messages over IP networks, making it particularly suited for signaling in telecommunications. In the context of 5G networks, especially for the NG-C interface between gNB and AMF, SCTP's ability to handle multiple simultaneous associations and its built-in congestion control mechanisms are beneficial for managing the complex signaling requirements efficiently. This aligns with the described architecture where SCTP is added on top of IP for the reliable transport of signaling messages.