book
Business Data Communications and Networking, Eleventh Edition
by Jerry Fitzgerald, Alan Dennis, Alexandra Durcikova
August 2011
Intermediate to advanced
592 pages
20h 28m
English
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CHAPTER 1
INTRODUCTION TO DATA COMMUNICATIONS

THIS CHAPTER introduces the basic concepts of data communications and shows how we have progressed from paper-based systems to modern computer networks. It begins by describing why it is important to study data communications and how the invention of the telephone, the computer, and the Internet has transformed the way we communicate. Next, the basic types and components of a data communication network are discussed. The importance of a network model based on layers and the importance of network standards are examined. The chapter concludes with an overview of three key trends in the future of networking.
OBJECTIVES ![]()
- Be aware of the history of communications, information systems, and the Internet
- Be aware of the applications of data communication networks
- Be familiar with the major components of and types of networks
- Understand the role of network layers
- Be familiar with the role of network standards
- Be aware of three key trends in communications and networking
CHAPTER OUTLINE ![]()
1.1.1 A Brief History of Communications in North America