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1前言局域网就是将单独的计算机利用网络相互连接起来,遵循一定的协议,进行信息交换,实现资源共享。常用的网线有:双绞线、同轴电缆、光纤等。双绞线可按其是否外加金属网丝套的屏蔽层而区分为非屏蔽双绞线(UTP-UnshieldedTwistedPair)和屏蔽双胶线(STP)。由于屏蔽双绞线的价格
1 Introduction LAN is the use of separate computers connected to each other by the network, follow a certain agreement, information exchange, sharing of resources. Commonly used network cable: twisted pair, coaxial cable, optical fiber and so on. Twisted pair wire can be according to whether it is plus the shield layer of metal mesh is divided into unshielded twisted pair (UTP-Unshielded Twisted Pare) and shielded double plastic line (STP). Due to the price of shielded twisted pair