Cisco dominates the internetworking market with a more than 80% share of the routers used on the Internet. The mid-level Cisco Certified Network Professional (CCNP) certification validates advanced knowledge of Cisco-based networks. Candidates must pass four exams that cover a wide range of topics, including installing, configuring, and troubleshooting LAN, WAN, and dial-up access services for organizations with mid-to-large sized networks.
