Clarification on M.Sc. Application Requirements & Entrance Exam Preparation Tips

Quick question about the M.Sc. (MIT) program application: when asked for the "Academic Transcript of 10+2 level," do I need to upload both my +2 transcript and SLC marksheet? I want to make sure I submit all required documents correctly. Any common oversights to be aware of? Also, I’d appreciate tips on preparing for the entrance exam—what types of questions should I expect, and what study materials or topics should I focus on?

Thanks for your help!