The cutoff is depend on college.  There are many college for diploma computer science . If you mentioned it will be more helpful.

There are many  polytechnic entrance exam . As every exam you have to score best . The rank 1 to 15000 is best rank for all exam. It make secure your seat in computer science.

Diploma computer science takes 3 years time

You can visit below link to see the top diploma college in india

https://engineering.careers360.com/colleges/list-of-diploma-in-computer-science-engineering-colleges-in-india

Thank you. I hope this answer helps you.

KJ Somaiya Polytechnic, Mumbai

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