group7_rothman:how does internet work??

Internet is a global network of computers each computer connected to the internet must have a unique address.Internet addresses are in the form of nnn.nnn.nnn.nnn. where nnn must be a number from 0-255.This address is known as the IP address.
If we connect to the internet through a internet service protocol (ISP), we are usually assigned a temporary IP address for the duration of the dial-in session.If we connect to the internet from a local area network(LAN) the computer might have a permanent IP address or it might have a temporary one from DHCP (dynamic host configuration protocol) server.In any case if you are connected to the internet and the computer will have a unique IP address.
The backbone of the Internet consists of a powerful set of telephone lines including T3 lines, capable of transferring data at a very fast rate of about 45 megabyte per second. The lines link metropolitan cities and include national access points or feeds.The backbone of the Internet is operated and maintained by various companies and organizations working cooperatively without centralized ownership. Redundancy is built into the backbone of the Internet so that if one or more major lines go down, traffic can be rerouted, much like a traffic detour when a highway is temporarily under construction. While this might slow Internet traffic, it will not ‘break’ the Internet.
Any one who is connected to the internet can send and receive information over the internet by using internet enabled softwares. When you point-and-click on a link, your browser sends out a request that is addressed to the website that houses the content you want.When the data packet arrives at the website, the server reads the request and sends the requested page back to your computer via a return address in the data packet this is your computer’s IP address.The data packet is routed back to you , your browser interprets the content and displays the page for you.