(With the development of the modernization level, the use of the network has penetrated into various fields, especially the current enterprise work is inseparable from the network, and the financial system, OA work system, CRM customer management system, Internet access system, etc. are all inseparable from the network , Through various software, the work efficiency of enterprises has been greatly improved. At the same time as the work efficiency of enterprises is improving, everyone's demand for the network is also increasing.)