ed to transmit information will limit the speed of the network, the effective distancebetween computer, and the network topology. The coaxial cable will provide transmissionspeeds of a few thousand bits per second for long distances and about one-hundred million bitsper second (Mbps) for shorter distances. The type of topology that will be used to arrange computers in this network will be the bustopology. The bus topology is composed of a single link connected to many computers. Allcomputers on this common connection receive all signals transmitted by any attached computer. Local area networks which connect separated by short distances, such as in an office or auniversity campus, commonly use a bus topology. Twisted pair, for slow speed LANs, will bethe cabling of these computers. Here, the main cable is typically a shielded twisted pair (likephone lines). The board is attached to a TAP via three cables then the tap is connected to thetwisted pair again at three points. An active hub will connect up to eight PCs and workstations. Each PC or work station can be up from two thousand feet from the active hub. Each port of theactive hub will be electrically isolated and will not need terminators for unused ports. Typically a LAN has a server node to provide certain services to the LAN users. In this case ofa small scale PC LAN, the server is attached to a laser printer, so that all users can share thatprinter through the server. Another use of the server is that if the LAN users need to get someupdated files. Instead of copying to all the nodes each of them can copy / share from the server,where only once those files can be loaded or updated. The Network security structure would not be a very complicated. The Supervisor would begranted full access to all the resources in the CIS program. Students who are a CIS major willhave read, copy and write capabilities for the classes they will attend. The Public accounts willonly have t...
