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The ultimate purpose of the project is providing integrated telecommunication infrastructure for three merged companies: TV broadcasting company, radio broadcasting company and publishing company. The suggested solution must combine computer networks of the three companies into powerful, reliable and fast information exchange network that provides comprehensive background for accomplishment of various business duties.
Ring topology: All devices are connected to one another in the shape of a closed loop, so that each device is connected directly to two other devices, one on either side of it. Ring topologies are relatively expensive and difficult to install, but they offer high bandwidth and can span large distances.
Tree topology: A tree topology combines characteristics of linear bus and star topologies. It consists of groups of star-configured workstations connected to a linear bus backbone cable. (Webopedia 2005)
A protocol is a set of rules that governs the communications between computers on a network. These rules include guidelines that regulate the following characteristics of a network: access method, allowed physical topologies, types of cabling, and speed of data transfer. Protocol summary Winkelman (2005) is given in Table 1.
Moskowitz defines a virtual private network (VPN) as a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or individual users with secure access to their organization's network. A virtual private network can be contrasted with an expensive system of owned or leased lines that can only be used by one organization. ...
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