The time required to prepare for any level of the NSE program depends on the time a candidate spends studying, the experience they possess, and aptitude.
Candidates can potentially complete lower levels of the program quickly. The mid to upper-level technical levels of NSE 4-7 require a greater investment in time and resources in order to attend more formal training, proctored labs, and exams.
NSE 8, depending on the candidate’s experience, can require many months of preparation. NSE 8 is the expert-level, assessment-only part of the program and is intended only for very experienced technical professionals.