Tata Consultancy Services Asociates Software Engineer interview questions

it was a 40 min tech interview for me. this year the interview process of tata was very difficult when compared to prev batches.a series of 20 questions were asked for me .i was able to answer 16 questions out of 20.then in hr round they asked me to speak about technology what are the positive and negative on using it.but mostly it is based on luck and time .pray to god for that