能用到的各种技术及实施方案为设计方向，为石景山卫生局局域网的建设提供理论依据和实践指导。
关键字：局域网、I
ter
et、计算机网络、网络协议、服务器、防火墙
III
fAbstract
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KeywordsLANI
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IV
f目录
前言1第一章计算机局域网概述2
一计算机局域网21计算机网络的分类22计算机网络的拓扑结构3
二计算机网络的相关技术41网络结构层次42IP地址和MAC地址53网络协议74IEEE局域网系列标准8
三传输介质及网络设备91网卡92交换机93路由器r