Computer Security Fundamentals, Second Edition

Chapter 2. Networks and the Internet

Chapter Objectives

After reading this chapter and completing the exercises, you will be able to do the following:

• Identify each of the major protocols used in network communication (for example, FTP and Telnet), and what use you can make of each

• Understand the various connection methods and speeds used on networks

• Compare and contrast a hub and switch

• Identify what a router is and its use

• Understand how data is transmitted over a network

• Explain how the Internet works and the use of IP addresses and URLs

• Recount a brief history of the Internet

• Use network utilities such as these: ping, IPConfig, and tracert

• Describe the OSI model of network communication and the use of MAC addresses

Introduction ...