包邮计算机网络-英文版.第5版

about the authors
1 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,