B.Tech

Hello Rohit,
Congratulations! First of all, you did a great job back then and yes you can think and prepare for CAT from 1st too so that you can perform well at the end of your degree and get yourself into a reputed IIM.
Good luck.
Thank you.

Fees for management quota in Dayananda Sagar is almost 1 lakh more from normal COMEDK fees. It was around 2.8-2.9 LPA two years back when i joined.

Hello,
Make your plan according to the time you can give for the preparation on a daily basis.
Work on your plan and identify your weakness and strength.
Try to plan and identify above stated things within a week. Set your plan agile and keep buffer time for revision and solving mock test papers.
Main

Subjects to be taken in B.Sc computer science are:-
1. Digital computer fundamentals(DCF).
2. Design and analysis of algorithm(DAA).
3. Data structure using C(DSUC).
4. JAVA.

I do not know about other campuses of SRM but in SRM University, Delhi NCR you can get lateral entry even if you have done Diploma.

Please refer to the link provided below for details regarding eligibility to appear for the JEST 2018. Important dates, syllabus, preparation tips can be found at the link mentioned below.
https://www.shiksha.com/science/exams/jest

A candidate must be either -(I) a Citizen of India or(ii) a subject of Nepal or(iii) a subject of Bhutan or(iv) a Tibetan Refugee who came over to India before 1st January 1962 with the intention of permanently settling in India or(v) a person of Indian origin who has migrated from Pakistan, Burma,

The cut-offs vary from year to year. Since this is a new course even we can't anticipate the cut-offs. Just prepare and do well in your exams.

It depends upon your date of birth. Whenever your D.O.B. exceeds the limit set by UPTU, you are not eligible. Generally, a student can appear for it 3 times.