本书从网络形态和构成要素出发，介绍计算机网络的原理、技术、协议及典型应用等。全书共分为8章，分别介绍计算机网络基础知识、数据通信与通信网技术、计算机网络体系结构、以太网交换技术、网络互联与互联网、虚拟化技术与服务器搭建、无线网络、计算机网络安全等。本书是一本实用性很强的教材，适合高等院校计算机、信息管理、电子商务及相关专业的学生和网络从业人员使用。

肖川，男、副教授，现任烟台南山学院计算机系主任、计算机系党支部书记。发表有中文核心论文、SCI等9篇，取得国家发明专利、软件著作权7项，出版著作、译注、教材15本；主持参与教育部协同育人项目4项，担任山东省一流本科课程计算机网络、局域网技术与组网工程负责人、主持精品资源共享课和成人数字化课程计算机网络，主持参与山东省教育教学改革项目3项，山东省创新创业项目2项，完成省教育厅十三五规划项目2项，省软科学项目2项 。自主完成烟台南山学院信息采集与报名系统，工资管理系统，自主求职招聘系统。多次获得烟台南山学院卓越贡献奖、优秀教师标兵、优秀教师、四级观摩课、线上教学比赛一等奖。

目 录
第1 章 计算机网络基础知识 ··············································································.1
1.1 计算机网络的形成和发展 ·······································································.1
1.2 计算机网络的定义 ················································································.4
1.3 计算机网络的功能和应用 ·······································································.4
1.4 计算机网络的拓扑结构 ··········································································.7
1.5 计算机网络的分类 ··············································································.10
1.6 计算机网络的基本组成 ········································································.13
1.7 计算机网络的主要性能指标 ··································································.15
本章习题 ·································································································.17
第2 章 数据通信与通信网技术 ·········································································.18
2.1 数据通信的基本概念 ···········································································.18
2.2 数据通信方式 ····················································································.22
2.3 数据的编码技术 ·················································································.27
2.4 数据的调制技术 ·················································································.30
2.5 脉冲编码调制 ····················································································.32
2.6 传输介质 ··························································································.33
2.7 信道复用技术 ····················································································.37
2.8 数据交换技术 ····················································································.42
本章习题 ·································································································.46
第3 章 计算机网络体系结构 ············································································.48
3.1 概述 ·································································································.48
3.2 OSI 参考模型 ·····················································································.52
3.3 OSI 各层的主要功能 ············································································.56
3.4 TCP/IP 体系结构 ·················································································.66
3.5 TCP/IP 协议栈 ····················································································.68
本章习题 ·································································································.76
第4 章 以太网交换技术 ··················································································.78
4.1 数据链路层服务 ·················································································.78
4.2 以太网的原理 ····················································································.81
4.3 以太网的分类 ····················································································.88
4.4 生成树协议 STP ··················································································.92
4.5 以太网端口技术 ·················································································.98
4.6 虚拟局域网 VLAN ·············································································.100
4.7 VPMN ·····························································································.104
4.8 局域网结构化布线技术 ·······································································.105
本章习题 ································································································.106
第5 章 网络互联与互联网 ··············································································.109
5.1 网络互联概述 ···················································································.109
5.2 网络互联设备 ···················································································.110
5.3 广域网互联技术 ················································································.120
5.4 互联网·····························································································.131
5.5 路由选择协议 ···················································································.148
本章习题 ································································································.157
第6 章 虚拟化技术与服务器搭建 ·····································································.160
6.1 什么是虚拟机 ···················································································.160
6.2 安装 VMware Workstation ·····································································.164
6.3 设置 VMware Workstation 15 Pro 的首选项 ···············································.165
6.4 使用虚拟网络编辑器 ··········································································.166
6.5 安装与配置 Windows Server 2016 虚拟机 ·················································.173
6.6 虚拟机的迁移方法 ·············································································.178
6.7 虚拟机的快照功能 ·············································································.180
6.8 互联网应用 ······················································································.183
本章习题 ································································································.199
第7 章 无线网络 ··························································································.201
7.1 无线局域网概述 ················································································.201
7.2 无线局域网组网元素 ··········································································.203
7.3 无线局域网组网结构 ··········································································.207
7.4 家庭无线局域网的组建 ·······································································.209
7.5 无线个域网 ······················································································.212
7.6 移动通信网 ······················································································.213
本章习题 ································································································.215
第8 章 计算机网络安全 ·················································································.217
8.1 网络安全的基本概念 ··········································································.217
8.2 数据加密 ·························································································.220
8.3 认证技术 ·························································································.229
8.4 报文摘要 ·························································································.232
8.5 防火墙技术 ······················································································.233
8.6 入侵检测系统 ···················································································.238
8.7 虚拟专用网 ······················································································.241
8.8 应用层安全协议 ················································································.248
本章习题 ································································································.252
附录A 校园网组建实例 ·················································································.254
A.1 校园网的功能 ···················································································.254
A.2 校园网设计要求和方案 ·······································································.255
A.3 校园网络设计实例 ·············································································.256
附录B 常用网络命令和故障分析 ·····································································.258
B.1 常用网络命令 ···················································································.258
B.2 网络故障分析 ···················································································.265
参考文献 ······································································································.270