Computer Networks And The Network - 1481 Words

Computer Networks Network is between two or more computers connected each other they can exchange data. For example a network allows computers to share files, users to message each other. Computer network topology is the way various components of a network for example (link, connect) which is different systems and nodes are connected and communicate with each other. A network is a set of devices, software, and cables that enables the exchange of information between them. Host devices are computers, servers, laptops, Personal Digital Assistants (PDAs), or anything a person uses to access the network. A topology describes the layout of a network. There are several topologies (Star, Ring, Bus and mesh). A Computer network consists of†¦show more content†¦LAN configuration consists of: O A file server - stores all of the software that controls the network, as well as the software that can be shared by the computers attached to the network. O A workstation - computers connected to the file server (Mac or PCs). These are less powerful than the file server O Cables - used to connect the network interface cards in each computer. METROPOLITAN AREA NETWORK (MAN) Metropolitan Area Network (MAN) covers larger geographic areas, such as cities. Often used by local libraries and government agencies often to connect to citizens and private industries. WIDE AREA NETWORK (WAN) Wide Area Networks (WANs) connect larger geographic areas, such as London, the UK, or the world. In this type of network dedicated transoceanic cabling or satellite uplinks may be used. ADVANTAGES OF NETWORK †¢ Speed. Sharing and transferring files within Networks are very rapid. Thus saving time, while maintaining the integrity of the file. †¢ Cost. Individually licensed copies of many popular software programs can be costly. Networkable versions are available at considerable savings. Shared programs, on a network allows for easier upgrading of the program on one single file server, instead of upgrading individual workstations. †¢ Security. Sensitive files and programs on a network are passwords protected (established for specific directories to restrict access to authorized users) or designated as copy