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UDP
UDP
It appears as though you have the two concepts reversed; if you are using flow control than you are using a reliable delivery method - these are at layer 4 of the OSI model, which is TCP for reliable delivery. TCP provides flow control. UDP would be used for speed, when you do not need reliable delivery. However, UDP does not use flow control, since there is no handshaking between transmission and reception, and it is a connectionless protocol.
The Stream Control Transmission Protocol (SCTP) [1] is a new IP transport protocol, existing at an equivalent level as UDP (User Datagram Protocol) and TCP (Transmission Control Protocol),[2] which currently provide transport layer functions to all of the main Internet applications. UDP, RTP, TCP, and SCTP are currently the IETF standards-track transport-layer protocols. Each protocol has a domain of applicability and services it provides, albeit with some overlaps.Like TCP, SCTP provides a reliable transport service, ensuring that data is transported across the network without error and in sequence. Like TCP, SCTP is a connection-oriented mechanism, meaning that a relationship is created between the endpoints of an SCTP session prior to data being transmitted, and this relationship is maintained until all data transmission has been successfully completed.Unlike TCP, SCTP provides a number of functions that are considered critical for signaling transport, and which at the same time can provide transport benefits to other applications requiring additional performance and reliability.By clarifying the situations where the functionality of these protocols is applicable, this document can guide implementers and protocol designers in selecting which protocol to use. Special attention is given to services SCTP provides which would make a decision to use SCTP the right one.
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There are many connectionless protocols depending on which layer of the OSI model you are referring to. An example would be UDP for transport, and IP for routing.
**The TCP transport layer protocol uses windowing and acknowledgments for reliable transfer of data. **The TCP and UDP port numbers are used by application layer protocols. **The TCP transport layer protocol provides services to direct the data packets to their destination hosts.
The Novell protocol is SPX
I'm gonna say they most definitely are NOT all concerned with reliability. UDP is a transport layer protocol that provides connectionless, unreliable data delivery services.
DNS is an application layer protocol. The application layer of the OSI model is the layer closest to the user and provides network services to the applications of the user. Examples of protocols that operate at the application layer are: DNS, FTP, TFTP, SNMP, TELNET, RLOGIN, SMTP, MIME, NFS, FINGER, BOOTP and SMB.
Simple Network Management Protocol
list 2 major types of internet application and their use