I'm an instructor at MakerSquare and regularly conduct technical interviews. I just wanted to add to Harsh's response re: people taking other peoples answers. Completing the admissions challenges that are posted online will only get you an interview. Once on site we only spend a few minutes, 10 at the most, reviewing their solutions to the admissions challenges before we move on to other questions. It is very, very apparent within just a minute if the applicant did not actually write their own solution.