A network technician is troubleshooting a client's VoIP (Voice over IP) application that is experiencing significant latency during calls. To prioritize speed and reduce delay, which of the following protocols should be used for the real-time voice data stream?
For real-time applications like VoIP, User Datagram Protocol (UDP) is the preferred choice. UDP is a connectionless protocol that offers low latency because it does not perform the extensive error checking and retransmission of lost packets that Transmission Control Protocol (TCP) does. While TCP guarantees reliable data delivery, the overhead it introduces can cause unacceptable delays (latency) in voice conversations. Internet Protocol (IP) is a network layer protocol responsible for addressing and routing, not transport, while Hypertext Transfer Protocol (HTTP) is an application layer protocol used for web browsing and is unsuitable for real-time voice streams.
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