The job of a CCNA or Cisco Certified Network Associate is to install, configure, and troubleshoot networks using products from Cisco, a major provider of networking services. The certification allows an associate to work as a technician in one or more areas, including routing and switching, security, wireless services, or data center operation. While specifics of the job vary, the responsibilities of a CCNA may involve evaluating network performance, defining policies and procedures, and improving network security. CCNAs often select and test equipment before other employees at a company are allowed to interact with it. CCNA certifications are typically not interchangeable.