CISCO is a computer system company.
there are some corse available in cisco certification like :
1> ENTRY LEVEL
CCENT
CCT
2> ASSOCIATED
CCDA
CCNA
CCNA SECURITY
3> PROFESSIONAL
CCDP
CCIP
CCNP
CCNP SECURITY
CCNP SP OPERATIONS
CCNP VOICE
CCNP WIRELESS
CCSP
4> EXPERT
CCDE DESIGN
CCIE ROUTING AND SWITCHING
CCIE SECURITY
CCIE SERVICE PROVIDER
CCIE VOICE
CCIE WIRELESS