計算機網絡

本書從網絡形態和構成要素出發，介紹計算機網絡的原理、技術、協議及典型應用等。全書共分為8章，分別介紹計算機網絡基礎知識、數據通信與通信網技術、計算機網絡體系結構、以太網交換技術、網絡互聯與互聯網、虛擬化技術與服務器搭建、無線網絡、計算機網絡安全等。本書是一本實用性很強的教材，適合高等院校計算機、信息管理、電子商務及相關專業的學生和網絡從業人員使用。

第1 章 計算機網絡基礎知識 ··············································································.1

1.1 計算機網絡的形成和發展 ·······································································.1

1.2 計算機網絡的定義 ················································································.4

1.3 計算機網絡的功能和應用 ·······································································.4

1.4 計算機網絡的拓撲結構 ··········································································.7

1.5 計算機網絡的分類 ··············································································.10

1.6 計算機網絡的基本組成 ········································································.13

1.7 計算機網絡的主要性能指標 ··································································.15

本章習題 ·································································································.17

第2 章 數據通信與通信網技術 ·········································································.18

2.1 數據通信的基本概念 ···········································································.18

2.2 數據通信方式 ····················································································.22

2.3 數據的編碼技術 ·················································································.27

2.4 數據的調製技術 ·················································································.30

2.5 脈衝編碼調製 ····················································································.32

2.6 傳輸介質 ··························································································.33

2.7 信道複用技術 ····················································································.37

2.8 數據交換技術 ····················································································.42

本章習題 ·································································································.46

第3 章 計算機網絡體系結構 ············································································.48

3.1 概述 ·································································································.48

3.2 OSI 參考模型 ·····················································································.52

3.3 OSI 各層的主要功能 ············································································.56

3.4 TCP/IP 體系結構 ·················································································.66

3.5 TCP/IP 協議棧 ····················································································.68

本章習題 ·································································································.76

第4 章 以太網交換技術 ··················································································.78

4.1 數據鏈路層服務 ·················································································.78

4.2 以太網的原理 ····················································································.81

4.3 以太網的分類 ····················································································.88

4.4 生成樹協議 STP ··················································································.92

4.5 以太網端口技術 ·················································································.98

4.6 虛擬局域網 VLAN ·············································································.100

4.7 VPMN ·····························································································.104

4.8 局域網結構化佈線技術 ·······································································.105

本章習題 ································································································.106

第5 章 網絡互聯與互聯網 ··············································································.109

5.1 網絡互聯概述 ···················································································.109

5.2 網絡互聯設備 ···················································································.110

5.3 廣域網互聯技術 ················································································.120

5.4 互聯網·····························································································.131

5.5 路由選擇協議 ···················································································.148

本章習題 ································································································.157

第6 章 虛擬化技術與服務器搭建 ·····································································.160

6.1 什麼是虛擬機 ···················································································.160

6.2 安裝 VMware Workstation ·····································································.164

6.3 設置 VMware Workstation 15 Pro 的首選項 ···············································.165

6.4 使用虛擬網絡編輯器 ··········································································.166

6.5 安裝與配置 Windows Server 2016 虛擬機 ·················································.173

6.6 虛擬機的遷移方法 ·············································································.178

6.7 虛擬機的快照功能 ·············································································.180

6.8 互聯網應用 ······················································································.183

本章習題 ································································································.199

第7 章 無線網絡 ··························································································.201

7.1 無線局域網概述 ················································································.201

7.2 無線局域網組網元素 ··········································································.203

7.3 無線局域網組網結構 ··········································································.207

7.4 家庭無線局域網的組建 ·······································································.209

7.5 無線個域網 ······················································································.212

7.6 移動通信網 ······················································································.213

本章習題 ································································································.215

第8 章 計算機網絡安全 ·················································································.217

8.1 網絡安全的基本概念 ··········································································.217

8.2 數據加密 ·························································································.220

8.3 認證技術 ·························································································.229

8.4 報文摘要 ·························································································.232

8.5 防火牆技術 ······················································································.233

8.6 入侵檢測系統 ···················································································.238

8.7 虛擬專用網 ······················································································.241

8.8 應用層安全協議 ················································································.248

本章習題 ································································································.252

附錄A 校園網組建實例 ·················································································.254

A.1 校園網的功能 ···················································································.254

A.2 校園網設計要求和方案 ·······································································.255

A.3 校園網絡設計實例 ·············································································.256

附錄B 常用網絡命令和故障分析 ·····································································.258

B.1 常用網絡命令 ···················································································.258

B.2 網絡故障分析 ···················································································.265

參考文獻 ······································································································.270