CMPT 371 Chapter Notes -Packet Switching, Circuit Switching, Internet Engineering Task Force

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Document Summary

Million of connected computing devices. Hosts and end systems = (pcs) Bandwidth transmission rate (bits per seconds) Protocol = standard of message/actions between end points. Uses protocols to connect networks to larger network. Tetf: internet engineering task force. The infrastructure enables distributed apps: Web, email, file sharing, etc. Connectionless = dropping off a letter at the post office, no tracking. Connection- oriented = tracked letter , more exp for important msgs. Network edge = applications, hosts, end users. Client request and receives service from always- on server. Eg web browser is client host, website is server. Allows security and reliability, but maybe a bottle neck busy server. Peer 2 peer model. No use of (or limited) dedicated servers. Goal : data transfer between end systems. Requires handshaking = sets up an agreement between 2 hosts first. Also called setting up a state. Uses tcp : there is acknowledgement when there is data loss.

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