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Differences and major features of UDP, TCP, and ICMP

Differences and major features of UDP, TCP, and ICMP - Linux Tutorial

From the course: LPIC-1 Exam 102 (Version 5.0) Cert Prep

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Differences and major features of UDP, TCP, and ICMP

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- [Instructor] With TCP/IP, there are different transport protocols. These are TCP and UDP. Both TCP and UDP are used to transport payloads of data. Both use IP addressing, and are forwarded from host to host until they get to their destination. You can think of TCP and UDP as the trucks that carry packages to destination addresses, although they are different in how they do it. TCP, or Transmission Control Protocol, is a connection-oriented protocol, meaning it is considered reliable. It has a three-way handshake to insure that there is reliable communication between hosts. TCP provides acknowledgments after successful delivery of packets, and automatic re-sends in the case of missing data. TCP also cares about the ordering of the packets, so it reassembles the packets at the destination, in order to preserve the integrity of the data. It uses error detection and error recovery. There are checksums on each packet. If…

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