内容简介
本书是一本概念清晰，内容简洁而宽广的关于在事务处理环境下数据通信和信息网络的教科书。内容包含基础知识及许多最新的和科学前沿的技术，如Internet,Intranets, Web,TCP/IP，无线网，网络安全等。新版增加了全新的第15章： Internet上的事务处理；完全更新网络安全部分，强调管理策略；..
目录
CHAPTER 1 Introduction 1
1.1 Information and Communication 1
1.2 The Manager''s Dilemma 2
1.3 The Nature of Business Information Requirements 2
1.4 Distributed Data Processing 4
1.5 The Transmission of Information 4
1.6 Networks 6
1.7 Communications Software 8
1.8 Management Issues 10
1.9 Standards 11
1.10 Internet Resources 11
1.11 Useful Publications 12
PART 1 REQUIREMENTS
CHAPTER 2 Business Information 17
2.1 Voice 18
2.2 Data 20
2.3 Image 21
2.4 Video 22
2.5 Response Time 23
Summary 26
Recommended Reading 28
CHAPTER 3 Distributed Data Processing 30
3.1 Centralized Versus Distributed Processing 31
3.2 Forms of Distributed Data Processing 41
3.3 Networking Implications of DDP 47
Summary 49
Recommended Reading 50
PART 2 FUNDAMENTALS
CHAPTER 4 Data Transmission and Transmission Media 53
4.1 Signals for Conveying Information 54
4.2 Transmission Impairments and Channel Capacity 67
4.3 Transmission Media 74..
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