The thesis deals with the network infrastructure of a small construction company. The current state of the computer network is unsatisfactory and therefore the company decided for realization of the brand new network wiring system in addition to the reconstruction of the company´s residence. Aim of this thesis is to review the current conditions of the computer network and to design new, optimized model in order to assure effective and flawless usage of the company´s information technology resources. The final output of this thesis is the construction plan of company´s residence with network wiring drawn in. This plan will cope with appropriate regulations and will include the list of material used, table of cables and suggested layout of t...