tailieunhanh - Network Fundamentals–Chapter 1

Living in a Network-Centric. 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. | 111 a 111 a CISCO Living in a Network-Centric World Network Fundamentals - Chapter 1 ITE I Chapter 6 2006 Cisco Systems Inc. All rights reserved. Cisco Public 1 Objectives 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 Wiki server. ITE 1 Chapter 6 2006 Cisco Systems Inc. All rights reserved. Cisco Public 2 Networks supporting the way we live Among all of the essentials for human existence the need to interact with others ranks just below our need to sustain life. -Communication is almost as important to us as our reliance on air water food and shelter. The methods that we use to share ideas and information are constantly changing and evolving. -Whereas the human network was once limited to face-to-face conversations. -Early data networks were limited to exchanging character-based information between connected computer systems. -Current networks have evolved to carry voice video streams text and graphics between many different types of devices. ITE 1 Chapter 6 2006 Cisco Systems Inc. All rights reserved. Cisco Public