What are two features of protocols used within the TCP/IP protocol stack?

Protocols within the TCP/IP protocol stack have specific characteristics that determine how data is transmitted across networks. One of the notable features of the User Datagram Protocol (UDP) is that it prioritizes delivery speed over reliability. This means that while UDP can send data quickly, it does not guarantee that all packets will reach their destination or that they will arrive in the correct order. This characteristic makes UDP ideal for applications where speed is crucial, such as video streaming or online gaming, where losing some packets is more acceptable than experiencing lag.

In contrast, Transmission Control Protocol (TCP) is designed to ensure reliable delivery of data. TCP establishes a connection and uses mechanisms for error detection, retransmission of lost packets, and in-sequence delivery, making it slower than UDP when it comes to transmitting data.

As for other options, TCP is generally slower than UDP due to its overhead in providing reliability, and IP is responsible for addressing and routing data packets but is not specifically focused on multimedia data transmission. Thus, the choice highlighting UDP's focus on speed captures an essential aspect of how protocols function within the TCP/IP stack.