CCNA - Cisco Certified Network Associate
CCNA certification is a first-level Cisco Career certification. CCNA certification validates the ability to install, configure, operate, and troubleshoot medium-size routed and switched networks, including implementation and verification of connections to remote sites in a WAN.
CCNP - Cisco Certified Network Professional
The CCNP validates the ability to plan, implement, verify, and troubleshoot local and wide-area enterprise networks and work collaboratively with specialists on advanced security, voice, wireless, and video solutions. In addition to CCNA exams, you must pass three separate professional-level exams - Route, Switch and Troubleshoot to acquire this certification.
CCIE - Cisco Certified Internetworking Expert
Cisco Certified Internetwork Expert is Cisco's highest certification, comprising six tracks. It was voted the most technically advanced IT certification by CertMag and is generally reported as the highest salaried certification in IT salary surveys.