CCNA Guide to Cisco Networking In Depth Author:Kelly Cannon The Cisco Certified Network Associate exam (CCNA) is the only exam required to achieve a CCNA Routing and Switching certification. Cisco CCNA certification is one of the premier industry credentials among networking professionals. The following topics are general guidelines for the content likely to be included on the CCNA Exam: oBridging/Switch... more »ing oOSI Reference Model & Layered Communications oNetwork Protocols oRouting oWAN Protocols oNetwork Management oLAN Design oCisco Basics, IOS & Network Basics.« less