Introduction to Addressing
Every computer on the Internet has an address. This address is a series of four numbers. When you connect to the Internet you are given an address and it is called your I.P.(Internet Protocol) address. Our system has dynamic I.P. addressing. This means that you will be given a different I.P. address each time you log on to the Internet. This helps make your connection more secure. Our server has an address as well. This address is called a DNS(Domain Name Server) address. Our Primary address is 206.65.217.240. Each server on the Internet has a similar address. Numbers are very hard to remember so we know how to get to a server by their domain name. Our domain name is logantele.com. When the Internet sees logantele.com it knows that we are talking about the server with the address of 206.65.217.240. When we use a domain name to make a call to a server we call it a URL(Uniform Resource Locator). Now what does this mean to you? This means that you can reach any computer attached to the Internet by knowing it’s domain name. For instance, USA Today’s server has the domain name www.usatoday.com. If you want to see hypertext documents on this computer you simply type in http://www.usatoday.com, or if you wanted to transfer files from this computer you would type ftp://www.usatoday.com. We will get into this in more depth later but right now you should just understand how servers are called by using a URL.
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