It is used in PSTN (Public switched telephone networks ). You have different categories in UTP ranging from 1 to 5. For instance, while Ethernet can use UTP category 3 wiring, Fast Ethernet and Gigabit Ethernet require at least the higher-grade .
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UTP category 5 wiring. Coaxial cable consists of an insulated single inner wire made of two conducting elements (one being copper) surrounded by a hollow outer cylindrical conductor (comprising half the electrical circuit and shielding the inner wire). We measure the size of coax cable in RG and the resistance in Ohm. Coaxial cable is less expensive than fibre-optic cable, is well known, and has been used for many years for all types of .
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data communication and is still being used for TV cable. Fibre optics transmits light and is very efficient. They usually deserved for connections between devices in larger networks, though in some very demanding environments, highly fault resistant fibre-optic cable is used to connect desktop workstations to the network and to link adjacent buildings. Fibre-.
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optic is the most reliable wiring but also the most expensive.
4. Network operating system software; such as Microsoft Windows 95, 98, 2000 or Windows NT and Novell NetWare. An operating system is a master control program, which controls the functions of the computer system as a whole and the running of application programs. All computers do not use the same operating systems. It is therefore important to assess the operating system used on a particular model before initial commitment because some software is only designed to run under the control of specific operating systems. The cost of software is likely to be lower in such circumstances as the development costs are spread over a greater number of users both actual and potential.5. Most networks; even those with just two computers; also have a hub or switch to act as a connection point between the computers.
