what is ccna ??

CCNA  (Cisco Certified Network Associate ) is a certification from CISCO.  CCNA certification is an associate-level certification.It is of various types.

CCNA  ASSOCIATE   LEVELS

CCNA ( Cisco Certified Network Associate ) Routing And Switching           2.   Security          3.    Wireless          4.     Design          5.      Industrial /IoT           6.      Data Center           7.      Cloud            8.    Service Provider            9.     Collaboration

To clear CCNA You must pass either of the following exams.

• The ICND1 Exam (100-105) and the ICND2 Exam (200-105)
  
  OR 
• The combined CCNA Exam (200-125)

 The validity of exam is a 3 Year.