Communication and computer networks - modelling with discrete-time queues

In this age of modern era, the use of internet must be maximized. Yeah, internet will help us very much not only for important thing but also for daily activities. Many people now, from any level can use internet. The sources of internet connection can also be enjoyed in many places. As one of the benefits is to get the on-line communication and computer networks modelling with discrete time queues book, as the world window, as many people suggest.