The book "Computer Networks," in its fourth American edition, is the ideal introductory presentation for today's networks - as well as for tomorrow's.

This classic bestseller has been fully updated to reflect the latest and most significant networking technologies, placing special emphasis on wireless networks, including 802.11 networks, Bluetooth networks, broadband wireless connections, dedicated networks, i-mode, and WAP.

However, wired networks are not overlooked, as ADSL, cable Internet, gigabit Ethernet, peer-to-peer networks, NAT, and MPLS are fully covered.

There's also plenty of material on applications, which includes more than 60 pages on the Web, as well as information on Internet radio, voice over IP, and video on demand.

Finally, the coverage of the topic of security has been revised and expanded, now occupying an entire chapter.