Hello student as in 3rd year switching stream is not possible in engineering college so first you need to complete your Bachelor degree in engineering at IIT in the same stream you're pursuing it. After that you need to apply for MS in your preferable university /college as each college conduct their separate entrance examination and interview to get into MS college. You can apply for GRE after completing your graduation which is for MS admission along with it you also need to appear and clear in language examination like TOEFL ILETS. please help me with your preferable college/University so that I can provide you more exam information
Feel free to comment if you have any doubt
Good luck

IIT Guwahati (IITG)

Admissions Courses & Fees Cutoff Placements Reviews

Shortlist

Brochure