CWNA candidates are required to pass 1 exam. The following tables list CWNP learning products designed to help CWNA candidates prepare for the required exams. See individual Exam Preparation Guides for more information. CWNA Exam & Recommended Training Required Exam  Recommended Training PW0-104 Wireless LAN Administration CWNA certifications are valid for three years. To recertify, either pass the current PW0-104 exam, or pass either exam PW0-200 or PW0-300. Complete Recertification Policy.