Cisco has announced three new concentrations to the CCNA program - CCNA Security, CCNA Wireless, and CCNA Voice. Candidates at the associate level (CCNA) are often expected to operate and maintain voice, security, and wireless equipment and this program is designed for such candidates. You must have a valid CCNA to achieve these concentrations. The concentrations allow a current CCNA to specialize and serves as a stepping stone to the Professional level certifications.