Introduction To Networks

We now stand at a critical turning point in the use of technology to extend and empower our human network. The globalization of the Internet has succeeded faster than anyone could have imagined. The manner in which social, commercial, political and personal interactions occur is rapidly changing to keep up with the evolution of this global network. In the next stage of our development, innovators will use the Internet as a starting point for their efforts - creating new products and services specifically designed to take advantage of the network capabilities. As developers push the limits of what is possible, the capabilities of the interconnected networks that form the Internet will play an increasing role in the success of these projects.
This chapter introduces the platform of data networks upon which our social and business relationships increasingly depend. The material lays the groundwork for exploring the services, technologies, and issues encountered by network professionals as they design, build, and maintain the modern network.
In this chapter, you will learn to:
• Describe how networks impact our daily lives.
• Describe the role of data networking in the human network.
• Identify the key components of any data network.
• Identify the opportunities and challenges posed by converged networks.
• Describe the characteristics of network architectures: fault tolerance, scalability, quality of service and security.
• Install and use IRC clients and a Wikiserver.