Aim of this group is to give a appropriate understandings of inter-networking and on the basis of further teaching to help you sell and support of inter-networking equipment. We can define, Internet as a globally linked computer, which is decentralized by design. Lets explain it by parts:
Is a Network: A network is assembly of computers. And we can say that Internet is also a network, because it is a assembly of million computers.
Globally connected computers: It means we can be connected to the Internet, regardless of our locations. The Internet has brought people in to the world closer by connecting networks by located in remotest area.
Decentralized Designing: The Internet has scattered design. It means, there is no concentric body, which controls the way in which Internet functions. The Internet does provides online services, which are centerally administrative. Every computer connected to Internet, known as “host”.
Internet Terminology: To know how the Internet works, here we have to first familiar with the some basic terms, which are explain below.
Client: A client is any computer on the network which appeal for utility from another computer on the network. To be capable to appeal for utility and access the resources present on some other computer on the network, the client must have satisfactory access permissions.
Server: A server is a computer which get calls from client computers, processes these calls, and sends the output to the individual client computers that had placed the calls. The range of services that a server can offer a client is based on the permissions possessed by the client. The server computer tell us about these permissions.
Client-Server Network: It is one of the most basic common architectures that is used for computer associations. In these types of network, maximum client computers are connected to the server and also to every one. Client computers request services from the server computer, and the server accepts or rejects these requests. The server computer is also responsible for storing relevant information that is frequently used by the client.