There are three exams for NSE4 Certification: NSE4_FGT-6.0 Fortinet NSE 4 – FortiOS 6.0 NSE4_FGT-5.6 Fortinet NSE 4 – FortiOS 5.6 NSE4-5.4 Fortinet Network Security Expert 4 Written Exam – FortiOS 5.4 Obvioursly, NSE4_FGT-5.6 exam is for NSE4 Certification. NSE4 Network Security Professional designation certifies that you have the expertise necessary to manage day-to-day configuration,