The picture above shows two clients requesting data from two servers. Each server and client is connected to a router which can be located via its IP address. Because of the large size of the data and limited amount of bandwidth, the data request must be broken up into packets in order to have packet-switching technology. Each packet must have a header that contains all the information required to find the client’s router and to allow that router to reassemble the data properly. It must also delete redundant packets and re-request missing packets. All of this is handled by the TCP, or transmission control protocol, of the router. When a packet fits this standard, it is considered an IP datagram. After being sent from the router, the actual transference of data occurs of the IP or Internet Protocol.
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