Computer Networks.Fifth Edition

about the authors1 introduction　1.1 uses of computer networks,　　1.1.1 business applications,　　1.1.2 home applications,　　1.1.3 mobile users,　　1.1.4 social issues,　1.2 network hardware,　　1.2.1 personal area networks,　　1.2.2 local area networks,　　1.2.3 metropolitan area networks,　　1.2.4 wide area networks,　　1.2.5 internetworks,　1.3 network software,　　1.3.1 protocol hierarchies,PREFACE　　This book is now in its fifth edition. Each edition hascorresponded to a different phase in the way computer networks wereused. When the first edition appearedin 1980, networks were anacademic curiosity. When the second edition appeared in 1988,networks were used by universities and large businesses. When thethird edition appeared in 1996, computer networks, especially theInternet, had become a daily reality for millions of people. By thefourth edition, in 2003, wireless networks and mobile computers hadbecome commonplace for accessing the Web and the Internet. Now, inthe fifth edition, networks are about contentdistribution(especially videos using CDNs and peer-to-peernetworks) and mobile phones are small computers on theInternet.　　Among the many changes in this book, the most important one isthe addition f Prof. David J. Wetheall as a co-author. David bringsa rich background in networking,having cut his teeth designingmetropolitan-area networks more than 20years ago. He has workedwith the Internet and wireless networks ever since and is aprofessor at the University of Washington, where he has beenteaching and doing research on computer networks and related topicsfor the past decade.　　Of course, the book also has many changes to keep up with the:ever-changing world of computer networks. Among these are revisedand new material on Wireless networks (802.12 and 802.16)　　The 3G networks used by smart phones　　RFID and sensor networks　　Content distribution using CDNs　　Peer-to-peer networks　...