Definition: CCIE (Cisco Certified Internetwork Expert) is the most advanced level of networking certification available from Cisco Systems. The CCIE certification is highly prestigious and renowned for its difficulty.
Obtaining a CCIE
Different CCIE certifications can be earned in separate areas of specialty called "tracks":- Routing and Switching
- Security
- Service Provider
- Storage Networking
- Voice
- Wireless
No specific training courses or lower-level certifications are prerequisites to a CCIE. However, in addition to the usual book study, hundreds of hours of hands-on experience with Cisco gear are generally required to adequately prepare for the CCIE.

