Can I take the previous FortiOS NSE exam after a new FortiOS exam is launched or released?

When a new version of an exam is released, there is a six-month overlap period during which the existing (new) version of the exam and the previous (old) version of the exam coexist. The last available registration date and last delivery date are indicated on the NSE certification pages in the certification and exam information, notices, and announcements. 

• NSE 4 - Network Security Professional

• NSE 5 - Network Security Analyst

• NSE 6 - Network Security Specialist

• NSE 7 - Network Security Architect

• NSE 8 - Network Security Expert