How long is the CCNA certification valid? The CCNA certification is valid for 3 years. To stay certified you can retake the CCNA exam or, if you want to certify yourself further, take an exam that is ‘higher’ than CCNA. Passing a CCNP exam will therefore also extend your CCNA certification. Passing CCNA, option 1: 2 classroom-based courses + 2 exams.