Finally a new edition! Professor Andrew Tanenbaum famous professor and inventor of Minix (UNIX clone Simplified) book offers a clear, precise and sharp on networks. This new edition covers new concepts such as IPv6, the WI-FI etc ... The book is organized based on the OSI model. Each layer and its features are seen in detail. Although the book is aimed at an informed public in the field, it can be read by the beginner player. Certainly it will take several readings as the author goes very far in detail. All is not understandable in 1st reading. The book can be read as a novel or from "foraging" in according to its information needs or study. Recommend to anyone who wishes to acquire solid knowledge in networks.