Do you need to learn how to support and maintain Cisco networks? In this course, Kevin Wallace shows you the basics you need to master, including concepts, components, cabling, and more. Kevin gives you an overview of a network, its benefits, and some day-to-day examples. He shows you the OSI model and the TCP/IP model, as well as some common network layer protocols, common transport layer protocols, a TCP three-way handshake, and application layer protocols and port numbers. Kevin explains why collision avoidance is important and how CSMA/CD and CSMA/CA help. He goes over hubs, switches, routers, wireless access points, and more. Kevin discusses network cabling, including copper cables, fiber cables, transceivers, and straight-through cables vs. crossover cables. Kevin guides you through Cisco router and Catalyst switch configuration, then concludes with some useful next steps.