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Introduction To IT
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Saturday, March 6, 2010

Computer Networks


1.Node

A node is a device connected to a computer network. Nodes can be computers, personal digital assistants (PDAs), cell phones, or various other network appliances. On an IP network, a node is any device with an IP address.















 2. Client

Client is the relationship between two computer programs in which one program, the client, makes a service request from another program, the server, which fulfills the request.














 3. Server

A device on a network that handles network resources. For instance, a file server is a computer and storage device created to storing files. Any user on the network can store files on the server.



















4. Hub

A network hub is a networking device that connects to one or more equipment to each other. A computer can connect to a server, printer and another computer through a network hub. It can be d to share files and information.















5. Network Interface Cards (NIC)

Expansion cards located within the system unit that connect the computer to a network. Sometimes referred to as a LAN adapter.
















6. Network operating system (NOS)


An operating system that includes special functions for connecting computers and devices into a local- area network(LAN).















7. Host computer


The main computer in a network: controls and performs certain functions for other computers.


















8. Network manager


A computer specialist responsible for efficient network operations and implementation of new networks.


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