USA

No. USA has its own entrance exams too. Moreover, you need to show your proficiency in English by TOEFL or so other ones. & then for VISA and all you need to show that you are financially sound enough via fellowship, scholarship or so to pay fees.

Most of the Universities in USA prefer students who have completed their graduation by doing 10+2+4. You are advised to do one year PG diploma in computer related subject to become eligible for MS IT in USA universities.

Whatever you do, the specialisation in Masters is important as it decides your further career.

Options are available in many countries like US, UK, Netherlands, Canada and Australia. You can decide about which country to go to by thinking about factors like budget, job opportunities and courses available. If finance is not a problem then you can start shortlisting the universities where you would like to apply.

Hello,
Some of the best ones are:
MIT
Georgia Institute of Technology
Carnegie Mellon University
University of California- Berkeley
California Institute of Technology
NYU
to name a few.

Hi Udayan,
Focus on your academics and study hard. Excellent percentile is required. Additionally, you must demonstrate an all-rounded profile that is taking part in extra curricular, project work, research, community or voluntary work. MIT is one of the toughest universities to get into and you need to prepare hard. A very good SAT score ( 1450+) is recommended. SAT subject tests are also required. You are also required to take the TOEFL. I will also advise you to visit the MIT admission webpage and see what all it takes to be an MIT student. All the best.