Types of Network
Networks can be deployed to meet range of needs for a company. Their configuration reflects the way they service those needs. Different types of networks are distinguished based on their size, their data transfer speed, and their reach. Private networks are networks that belong to a single organization. There are three different types of networks. They are:
- Local Area Network (LAN)
- Metropolitan Area Network (MAN)
- Wide Area Network (WAN)
Local Area Network (LAN)
Local Area Network (LAN) is the most basic network building block. It is network that is restricted to a small physical area. A small LAN might connect a few computers in an office or in home; a large LAN could extend over an office park or university campus, connecting computers and other devices in a number of buildings. The major benefit of a Local Area Network (LAN) is that it can help reduce cost by allowing people and computers to share expensive resources. It also enable end-user to participate in office automation technology. In addition, LANs may be connected to other networks by means of a network gateway.
Metropolitan Area Network (MAN)
Metropolitan Area Network (MAN) is a data network designed for a town or city. In terms of geographical breadth, MANs are larger than local-area networks, but smaller than wide-area networks. MANs are usually characterized by very high-speed connections using fiber optical cable or other digital media.
Wide Area Network (WAN)
Wide Area Network (WAN) is a network that exist over a large scale geographical area. It connects different smaller networks, including Local Area Networks and Metropolitan Area Network. This ensures that computers and users in one location can communicate with computers and users in other locations. WAN implementation can be done either with the help of the public transmission system or a private network. The internet could be described as the biggest WAN in the world. The internet is used by businesses, governments, organizations, and individuals for almost any purposes.
Computer network refers to a group of networked computer i.e., computers that are linked by means of a communication system. Networks can be organized into three basic models. They are centralized computing, client/server and peer-to-peer. Centralized computing models are used with mid-range and mainframe computers usually running a UNIX-based operating system. Centralized computing model offer the greatest level of performance but at the greatest cost as well. Client/Server is the most popular configuration, because of its versatility and power drawing mainly from the vast variety and higher performance of specialized server hardware. Client/Server and peer to peer are used with PC networks. The peer-to-peer model is the simplest to implement and assemble.
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