This course conforms to the third of four courses leading to the Cisco Certified Network Associate (CCNA) designation. The course expands on topics covered in Cisco Networking Level 2 and examines new topics. It describes the architecture, components, and operations of routers and switches in a large and complex network. You will learn how to configure routers and switches for advanced functionality. By the end of this course, you should be able to configure and troubleshoot routers and switches and resolve common issues with OSPF, EIGRP, STP, and VTP. You will also develop the knowledge and skills needed to implement DHCP and DNS operations in a network.