Our Take: Fortinet’s NSE 4 Network Security Professional certification validates intermediate expertise in network security architecture and threat defense, making it a respected credential within the cybersecurity profession. Cybersecurity professionals pursuing this certification typically seek to deepen their technical knowledge and advance their career prospects in a competitive field. The certification demonstrates real market demand, with 21 active U.S. job postings currently available and an average salary of $122,000 for certified professionals. Candidates invest $200 to sit for the exam, with recertification required every two years to maintain active status. This relatively modest exam cost combined with strong salary outcomes makes the NSE 4 an attractive credential for those committed to building legitimate network security expertise.