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Introduction Network design is a detailed labor-intensive activity During the design process all key aspects of the network are examined in terms of how they meet current needs and how they must be adapted or enlarged as network usage grows This includes the hardware which constitutes the physical network the software used to give that network its structure and organization and the firmware which gives your network interface controllers and hubs their functionality The goal is to design a network that is cost-effective easy to manage and has the flexibility to adapt as your companys business and technical requirements grow and change The logical design represents how the network operates The physical design represents the actual locations of networking equipment servers and clients Logical and Physical Network Design The physical design of a computer network is easier to understand To a computer user a network is simply a group of computers and all of the devices associated with computers from routers to printers to external hard drives that are connected to each other by a number of different forms of communications capabilities Some networks involve permanent connections which are almost always in the form of cables Other networks rely on temporary connections that are established maintained for a specific period of time and then broken through telephone or other forms of communication devices In general the more permanent connections that exist within a network the more smoothly that network will run A network run entirely on temporary connections is subject to unwanted fragmentation This tends to be the case especially with telephone-line connections because they are constantly being called upon to be used for other functions at precisely that moment that a computer user wishes to employ them to carry data The fewer temporary connections that exist within a network the more efficiently it will run and the fewer modifications it will require to be expanded in the future We can see in this sense
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