IT 104 Lecture Notes - Lecture 4: Hypertext Transfer Protocol, Transport Layer Security, Transmission Control Protocol
31 Oct 2017
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Document Summary
Communication network: a collection of computers electronically connected so that data can be shared over a distance. Protocol: computers are able to communicate because they have an agreement (protocol) about how to converse (send and receive messages) Tcp (transmission control protocol): ensures correct delivery of packets from client to server. Ip (internet protocol): responsible for routing packets from node to node. Packets: electronic envelope that carry messages to a destination. Every webpage or email that you send comes or leaves as a series of packets. Packets carry the sender"s ip address, destination ip address, number that the message is broken into and sequence number of a particular packet. Ip address: unique numeric address that each computer connected to the. Packet-switching network: networks that ship data around in small packets. Receiving computer reassembles the packets into the correct sequence. Node: internet connected computers, routers and gateways. A client (personal computer) connects with a server (shared computer) permitting.
