# Chapter 1. Computer Network and the Internet

* 1.1 What Is the Internet?
* 1.2 The Network Edge
* 1.3 The Network Core
* 1.4 Delay, Loss, and Throughput in Packet-Switched Networks&#x20;
* 1.5 Protocol Layers and Their Service Models&#x20;
* 1.6 Networks Under Attack&#x20;
* 1.7 History of Computer Networking and the Internet&#x20;
* 1.8 Summary&#x20;