This book was obsolete from the moment it was written. That is because nothing changes faster than vocabulary in a field where there is money to be made. Since major breakthroughs and advances are still happening in the area of networking, there are new network-related words and concepts to be found in almost every issue of every computer magazine. If you include acronyms and abbreviations, the speed with which the vernacular expands is even faster. For example, the first edition of this book was published under a year ago and it was no trouble finding almost 2,000 new entries for Appendix A....