Hello student yes you can appear in NDA II there's nothing difference in the entrance examination NDA examination held twice every year one in April and second in September. Candidates lie between 16.5 year old to 19.5 year old are eligible to appear in NDA entrance examination.

For more updates refer to the link mentioned below - https://competition.careers360.com/exams/nda

Feel free to comment if you have any doubt

Good luck