Cisco offer 5 levels of Cisco Network Certifications, Entry, Associate, Professional, Expert and Architect. The most common certifications are at the Associate, Professional and Expert levels and are the level of Engineer most commonly used by 4CornerNetworks. Each level of Certification has a specialised area of expertise (commonly known as a track) for example – CCNA Security is an Associate level certification, with a specialisation/track in Security.