The Cisco exams have changed a few times. In 2013, Cisco reported a redesign to its affirmation program that adjusts confirmation and preparing curricula with developing industry work roles. There are presently a few distinct sorts of Cisco-Certified Network Associate, with "CCNA Routing and Switching" being nearest to the first CCNA center; different sorts of CCNA concentrate on security, joint effort, data centres, administration suppliers, feature, voice, and wireless. The substance of the exams is proprietary.Cisco and its learning accomplices offer a mixed bag of diverse preparing methods, including books distributed by Cisco Press, and online and classroom courses accessible under the title "Interconnecting Cisco Network Devices."