Sunday, September 06, 2009

Components of a computer network

A network is a combination of different components. The most essential components of a simple network are:

Servers: Servers are the faster computers to run various softwares,stores and process information and to provide a human interface for the users to be able to use the networked computers.

Nodes: Nodes are the computers on the network which are provided to the users to carry out their task using the network.A node which is more powerful and can handle local information processing or graphics processing is called workstation.

The workstation works only for the person sitting in front of it. whereas a server serves all the people on the network to share its resources. A workstation usually has an inexpensive, small hard disk to carry out local tasks. Some workstations, called disk less workstations, have no disk drive of their own. Such workstations also called dumb terminals, rely completely on the LAN for their access. The network operating system Lets the nodes work as if all the resources at the server belong to the Node itself.

LAN cables: This is the medium over which the information travels from computer to computer. from the computer onto the medium and to take up the information from the medium and make it available to the computer in the form it can read.

Network Operation system Software: to control the movement of information on the network.
Networks which are more complex, require components like hubs, on the network, each computer is called a node or a workstation unless there are certain computers designed as servers. Each computer contains a network interface card. Lan cables connect all the node sand severs together to form the network. in addition to its local disk operation system each node requires a networking software the enables the nodes to communicate with the servers. In return the files servers run network software the communicate with nodes.

No comments: