The 5th edition of this text has been completely revised to focus entirely on the Internet, and so avoids the necessity of describing protocols and architecture... » 

The 5th edition of this text has been completely revised to focus entirely on the Internet, and so avoids the necessity of describing protocols and architectures that are no longer relevant. As many Internet applications now involve multiple data types - text, images, speech, audio and video - the book explains in detail how each are represented. «