Question: Which transport protocol is utilized in conjunction with IP for GTP-U transmission modes across various 3GPP network interfaces?
Option 1: TCP/IP (Transmission Control Protocol/Internet Protocol)
Option 2: SCTP/IP (Stream Control Transmission Protocol/Internet Protocol)
Option 3: DCCP/IP (Datagram Congestion Control Protocol/Internet Protocol)
Option 4: UDP/IP (User Datagram Protocol/Internet Protocol)
Explanation: The correct answer is UDP/IP because it is used for the unacknowledged mode of GTP-U transmission, prioritizing efficient, low-latency data transfer over guaranteed delivery across multiple network interfaces.