Welcome to the sixth edition of Data Communications and Networking with TCP/ IP Protocol Suite. We are living in an information age, and information is dis- tributed faster that ever using the Internet, which works based on the topics discussed in this book.

Features

Although the main goal of this book is to teach the principles of networking, it is de- signed to teach these principles using the following features:

TCP/IP Protocol Suite

This book is designed to teach the principles of networking by using the TCP/IP proto- col suite. Teaching these principles using protocol layering is beneficial because these principles are repeated and better understood in relation to each layer. For example, ad- dressing is an issue that is applied to several layers of the TCP/IP protocol suite. Another example is framing and packetizing, which is repeated in several layers, but each layer treats the principle differently.