《计算机网络:自顶向下方法(第4版)(影印版)》是当前世界上*为流行的计算机网络教科书之一，采用了作者**的自顶向下的方法来讲授计算机网络的原理及其协议，即从应用层协议开始沿协议栈向下展开学习，强调应用层范例和应用编程接口，使读者尽快进入每天使用的应用程序环境之中进行学习和“创造”。《计算机网络:自顶向下方法(第4版)(影印版)》是原书第4版，反映了网络技术的*新变化。

Chapter 1 Computer Networks and the Internet
1.1 What Is the Internet?
1.1.1 A Nuts-and-Bolts Description
1.1.2 A Services Description
1.1.3 What Is a Protocol?
1.2 The Network Edge
1.2.1 Client and Server Programs
1.2.2 Access Networks
1.2.3 Physical Media
1.3 The Network Core
1.3.1 Circuit Switching and Packet Switching
1.3.2 How Do Packets Make Their Way Through Packet-SwitchedNetworks?
1.3.3 ISPs and Internet Backbones
1.4 Delay, Loss, and Throughput in Packet-Switched Networks
1.4.1 Overview of Delay in Packet-Switched Networks
1.4.2 Queuing Delay and Packet Loss
1.4.3 End-to-End Delay
1.4.4 Throughput in Computer Networks
1.5 Protocol Layers and Their Service Models
1.5.1 Layered Architecture
1.5.2 Messages, Segments, Datagrams, and Frames
1.6 Networks Under Attack
1.7 History of Computer Networking and the Internet
1.7.1 The Development of Packet Switching: 1961-1972
1.7.2 Proprietary Networks and Internetworking: 1972-1980
1.7.3 A Proliferation of Networks: 1980-1990
1.7.4 The Intemet Explosion: The 1990s
1.7.5 Recent Developments
1.8 Summary
Road-Mapping This Book
Homework Problems and Questions
Problems
Discussion Questions
Ethereal Lab
Interview: Leonard Kleinrock

Chapter 2 Application Layer
2.1 Principles of Network Applications
2.1.1 Network Application Architectures
2.1.2 Processes Communicating
2.1.3 Transport Services Available to Applications
2.1.4 Transport Services Provided by the Internet
2.1.5 Application-Layer Protocols
2.1.6 Network Applications Covered in This Book
2.2 The Web and HTTP
2.2.1 Overview of HTTP
2.2.2 Non-persistent and Persistent Connections
2.2.3 HTTP Message Format
2.2.4 User-Server Interaction: Cookies
2.2.5 Web Caching
2.2.6 The Conditional GET
2.3 File Transfer: FTP
2.3.1 FTP Commands and Replies
2.4 Electronic Mail in the Internet
2.4.1 SMTP
2.4.2 Comparison with HTTP
2.4.3 Mail Message Formats and MIME
2.4.4 Mail Access Protocols
2.5 DNS--The lnternet's Directory Service
2.5.1 Services Provided by DNS
2.5.2 Overview of How DNS Works
2.5.3 DNS Records and Messages
2.6 Peer-to-Peer Applications
2.6.1 P2P File Distribution
……
Chapter 3 Transport Layer
Chapter 4 The Network Layer
Chapter 5 The Link Layer and Local Area Networks
Chapter 6 Wireless and Mobile Networks
Chapter 7 Multimedia Networking
Chapter 8 Security in Computer Networks
Chapter 9 Network Management
References
Index