Transfers ToCSUDescriptionFormerly: CST C203D. This is the third course in the Cisco Certified Network Associate (CCNA) curriculum series. It describes the architecture, components, operations, and security to scale for large, complex networks, including wide area network (WAN) technologies. The course emphasizes network security concepts and introduces network virtualization and automation. Students learn how to configure, troubleshoot, and secure enterprise network devices and understand how application programming interfaces (API) and configuration management tools enable network automation. Hands-on preparation for the CCNA exam is emphasized. 