This chapter provides an overview of network principles, standards, and purposes.

Different types of network topologies, protocols, logical models, and the hardware needed to create a network will be discussed in this chapter. In addition, network component upgrades, email server installations and configuration, troubleshooting, and preventive maintenance will be covered. You will also learn about network software, communication methods, and hardware relationships.

To meet the expectations and needs of your customers and network users, you must be familiar with networking technologies. You will learn the basics of network design and how some components affect the flow of data on a network. This knowledge will help you successfully troubleshoot network problems.