... products and that is the focus of Parts Five and Six of this book.CHAPTER DATA COMMUNICATIONS ,DATA NETWORKS, AND THE INTERNET1.1 Data Communications and Networking for Today’s Enterprise1.2 A Communications ... Shannon12 CHAPTER 1 / DATA COMMUNICATIONS, DATA NETWORKS, AND THE INTERNET1.1 DATA COMMUNICATIONS AND NETWORKING FORTODAY’S ENTERPRISEEffective and efficient data communication and networking facilities ... designs:• Fundamentals of Data Communications: Parts One (overview) and Two (data communications) and Chapters 10 and 11 (circuit switching, packet switching, and ATM).• Communications Networks:...