M.Tech

Yes, You can do M.Tech after MCA. There is a 2-year course in M.Tech. There is no such relaxation in the year for MCA students who want to do M.Tech. If you want to do M.Tech then It's Better to Do from IITs and NITs through GATE Entrance Exam. I am also sending you an authentic link from where you know all information About the M.Tech course. Please check it out. link-https://www.shiksha.com/m-e-m-tech-chp.

No, you have to go for the counselling process. Few steps we have to do in it. Firstly we have to register for counselling then we have to fill choices of Branches and colleges then after that you get allotted colleges and branches on the basis of rank. This is a similar way of process which happens also for B.Tech courses counselling in NITs. If you want to know more in detail then I am sending you an authentic link from where you can get all information about the counselling process. Please check it out. link-https://www.shiksha.com/engineering/gate-exam-counselling.

Hi
As you got very good result in your board exams you will definitely have a chance of getting seat in Integrated MTech in VIT . But we don't know when the counselling will start. Be updated by checking the updates in links given below. Hope you get seat in VIT
Chennai: http://chennai.vit.ac.in/
Vellore: https://vit.ac.in/