BASICS TO START UP WITH BASIS ADMINISTRATION

OVERVIEW OF COMPUTER NETWORKS 

It is combination of multiple computers connected together using a telecommunication system for the purpose of sharing data, resources and communication. For a while, a home computer network may consist of two or more computers that share files and a printer using the network. The size and scalability of any computer network are determined by the hardware used as well as which protocols are being implemented.

Or a network consists of two or more computers that are linked in order to share resources (such as printers and CD-ROMs), exchange files, or allow electronic communications. The computers on a network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams.

NETWORK TYPES & DEVICES

Local Area Network: 

A Local Area Network (LAN) is a network that is confined to a relatively small area. It is generally limited to a geographic area such as a writing lab, school, or building. Rarely are LAN computers more than a mile apart.

A local area network (often called a LAN) connects two or more computers in a house or an office.

Wide Area Network: 

Wide Area Networks (WANs) connect larger geographic areas, such a Solar Soft, the India, or the world. Dedicated transoceanic cabling or satellite uplinks may be used to connect this type of network.

A corporate network enables communication among various offices of the same organization.

In fact, two computers connected over the Internet are not considered a computer network. Some basic types of computer networks include:

An "inter network", sometimes called a Wide Area Network (because of the wide distance between networks) connects two or more smaller networks together. The largest internetwork is called the Internet.

Computers can be part of several different networks. Networks can also be parts of bigger networks.

If we consider as the local area network in a department store is usually connected to the corporate network of the parent company, and may have privileges with the corporate network of a bank. Any connected machine at any level of the organization may be able to access the Internet, for example to demonstrate computers in the store, display its catalogue through a web server, or convert received orders into shipping instructions.

Where in the network technology, there are two different computers existing, known as

Server Computer - A computer that delivers information and software to other computers linked by a network

Client Computer - A computer that receives information and software from server computer linked by a network

PROTOCOL & IP ADDRESS CONCEPTS

A protocol is a set of rules that governs the communications between computers on a network. These rules include guidelines that regulate the following characteristics of a network: access method, allowed physical topologies, types of cabling, and speed of data transfer.