Network is a group of computers connected to each other. The computers in a network are connected through cables and satellites. The Internet is an inter-connection between several computers of different types belonging to various networks all over the globe. It us a network of networks.
History of Internet
In 1969, the Department of Defence (DOD) of United States of America started a network called ARPANet (Advanced Research Projects Administration Network). It began in a modest way with one computer California and three in Utah. Leter, to share the Software and Hardware resources, the military allowed Universities to join the Network. The students then developed much of the Software, thus giving birth to the popular Network of Networks called the Internet.
How it Works
The Internet works because open standards allow every network to connect to every other network.
This is what makes it possible for anyone to create content, offer services, and sell products without requiring permission from a central authority.
It levels the playing field for everyone and it’s the reason why we have a rich diversity of applications and services that many of us enjoy today.
The World Wide Web (abbreviated as WWW) is a system of interlinked hypertext documents that are accessed via the Internet. With a web browser, one can view web pages that may contain text, images, videos, and other multimedia and navigate between them via hyperlinks.
Accessing a Web Site
To access a Web Site, you need its URL. Uniform Resource Locator (URL) is used to indentify each Web Site uniquely on a network. For example, the URL http://www.elixiruniverse.com/ provides the following information.
1). http: http stands for Hypertext Transfer Protocol (HTTP). A Protocol is a set of rules that the computers follow to communicate with each other. There are several protocols used on WWW, http is one of them.
2). www: this indicated that the Web site is on www.
3). elixiruniverse: This indicates the name of the Web Site.
4). com: This indicates the text of the Web Site. In this example: it denotes it is a commercial Website.
.edu Universities that maintain their own Web sites use this suffix
.net Organizations that have networking as their business use this suffix.
.mil Defense forces that maintain their own Web sites use this suffix.
.gov Government Organizations of various states and countries that have
their own Web sites use this suffix.