Definition of Computer Networks and Its Advantages

Network is a anthology of computers associated to each other. It allows the computers to communicate with each other and sh resources which include information, software and peripheral devices such as printers, scanners

Now days, computers are used in a wider range. All the organizations are using multiple computers within their departments to perform their day to day work. It is necessary to connect them which form a network. The networks are classified into different types according to the network size. When computers communicate with each other, they follow certain specific formats and rules. This formats and rules are explained by the OSI (Open Systems Interconnection) model. This OSI model is conceptual and has seven layers and each layer is having its own functions.

 

As network selection criterion forms the basis of a network, since it helps to select a secured and efficient network. The criterion explains network performance improvement techniques and necessity of reliable network. Various standards organizations are used for network communication to maintain consistency.

Introduction to computer Networks

Computer network is an interconnection of two or more computers and peripherals such as printers and faxes. Computer network allows the user to share and transfer information using cables or modems within a network.

Need for Computer Networks

Computer network allows the user to share data with other users in a network, for example, a company having a number of computers which are connected in a network. Computer network will enable the users to share files and folders and get synchronized with other users.

Computer network also allows the user to share resources such as printers and faxes. Printer can be installed on one computer and can be accessed by other users in a network. By this the need of installing printers on individual computers is avoided and it results in cost-effectiveness. Computer network also allows the user to communicate with each other using instant messaging tools to share ideas, files or solve queries.

The user can also setup a central system wherein common files and folders which are frequently used by all the users can be stored. All the users within the network can easily access those files. Instead of taking backups from individual computer, the user can take data backup from the central system. This helps in reducing the time of taking backup.

If an organization you have several computers but just one phone line, a network makes it easier to use the Internet. Numerous computers can share one modem to use the equivalent Internet connection. Otherwise, you car even install a dedicated high-speed Internet connection such as a cable modem for your network.

It is possible to add new systems or servers to an existing network easily. Thus the computer network provides scalability. It is also reliable to use a network as it uses mirroring and redundancy

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