Techno India University

Yes, you can definitely do a degree course after completing a Diploma in Computer Science Engineering. In fact, many students who complete a Diploma in Computer Science Engineering go on to pursue a Bachelor's degree in Computer Science Engineering or a related field.
A Diploma in Computer Science Engineering provides a solid foundation in computer science and engineering concepts, principles, and practices. However, a degree program provides more in-depth knowledge and skills in these areas, as well as exposure to advanced topics and technologies.

Your question is not clear to me, I'm taking the course as B.A. LL.B. , so the full fees of this programme from Techno India University is 120000.

TIU's Integrated dual degree course B.Sc.+M.Sc (5 years) fee is about Rs 5.8 Lacs.

BBA fees in Techno India university will cost you around 340000 for complete 3 years and it's a good option if you are trying to find a good college in Kolkata in nominal fees.
Eligibility criteria in Techno India university is 50% in 12th standard and here you can also find scholarships which will benefit you for fees.

Students aspiring for the 3 years BCA course at Techno India University must have cleared 10+2 or equivalent (any stream) securing a good aggregate from a recognized board with Subject English alongside Mathematics, Computer Application or Information Science.

Techno India University offers the course MSC Biotechnology based on the bachelors merit that you've obtained in the undergraduation. So it's better to maintain atleast moderate score to avail the additional features provided by the college management. You need to have a 50% in Bachelors degree.

Yes, you can but you have to clear the entrance exam, no matter what was your score in high secondary exam.

The fee structure at Techno India University for BBA LL.B is around 68 thousand/ year.

First and foremost, you should be aware that Techno India University is a deemed university, and Techno India Salt Lake is part of WBUT. TIU's fee structure would be around 50k per semester, while TISL's would be significantly lower. You can apply for direct admission to both colleges, however TISL has a smaller number of places than techno India university. Techno India University will be the best choice for any engineering aspirant due to its highly specialised infrastructure as well as placement scopes.