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网络环境 某单位是较先运用计算机网络技术用于办公和技术培训的单位。从最初的网络系统起，经过几次优化后，发展到目前的采用双绞线和同轴电缆相连、星型网的Ｅｔｈｅｒｎｅｔ结构。单位的ＬＡＮ（Ｌｏｃａｔ ＡｒｅａＮｅｔｗｏｒｋ）操作平台由Ｎｏｖｅｌｌ公司的Ｎｅｔｗ
A unit of network environment is the first unit to use computer network technology for office and technical training. From the beginning of the network system, after several optimization, the development of the current use of twisted pair and coaxial cable connected to the star network Ethernet structure. The unit’s LAN (Locat Area Network) operating platform by Novell’s Netw