Information Technology

Rayat Bahra Hoshiarpur Campus, Punjab University, Chandigarh, GNA University, Phagwara, DAV College, etc.

You can do MCA to become a software developer.

It depends on how well you have studied in your UG, and PG. I mean, how easily you can gasper the concepts. If your UG & PG courses are irrelevant and you are writing NET based on your PG subject, then you need approximately 1 year for NET preparations. If your degree & PG are similar and you are attending NET based on the same streams, then 6 months of preparation is enough. But, you have to be much focused, prepare notes by yourself, and study without diverting your mind.
All the best.

You can get the fee structure by the given link:
https://www.shiksha.com/it-software/course/bachelor-of-computer-application-harlal-institute-of-management-and-technology-greater-noida-255026

You can do M.Tech with inter branch.

Your rank is not so good. So, there are very less chances to get this branch.

Yes, absolutely. He can take it but you have to qualify the entrance exam.

It's not a good option because both are completely different fields. So, you should continue your engineering field.