Firstly I would recommend you to ask questions in English so that we can understand what you need to know well.

Now if you wish to take admission in Diploma in Computer Engineering then you have to appear for the polytechnic entrance conducted by your state. The minimum eligibility criteria for Diploma is that you must have passed class 10 exam with preferably 60% marks and you need to qualify the entrance in order to get seat.

As you have tagged a polytechnic in Nashik, I assume that you are a student of Maharastra and want to take admission there. So visit the link below for the Polytechnic admission in Maharastra 2021:

https://engineering.careers360.com/articles/maharashtra-polytechnic-admission

For more information regarding KK WAGH Polytechnic visit the link below:

https://www.careers360.com/colleges/kk-wagh-polytechnic-nashik

I hope this answer helps. All the very best for your future endeavors!