CAT

You can get admission in private colleges or state engineering colleges. I am sorry to say this but you cannot get Computer science branch in any good NIT or SRM or VIT but you can pursue it from other colleges which could offer you the course.

You must work for 2 years and go for MBA.

Hello Nikhil,
As of now, FMS gives weightage to only your CAT score and not to your past academic scores. Thus, any person who will score a percentile of 99+ and if that meets the cutoff, he/she will get the shortlist. Last year as well the cutoff was 98.54 percentile, thus scoring 99 will work a lot in your favour. All the best.

Go for TIME. Study Materials are good.

Although you will clear all the cutoffs, but without a really good CAT score probably you will not receive interview call from IIMs. Given these score I would suggest that you should do really well in CAT and try to achieve at least 99.5 percentile. If you get more than 99.5 percentile with more than 95 percentile in all subsections, you will definitely get few interview calls from high ranked IIMs.

99.9% for all exams to get into iim

It depends. There are a lot of factors considered. However looking at your academic record, it seems that you might be severely disadvantaged because of low GPA. To compensate for that you will need to score a little more in CAT. Typically 99.5 percentile is enough to get anyone a call from IIM (with similar academic background). However to be safe I would suggest that you target 99.7 percentile.

No. Any one eligible score is sufficient to apply for admission in PSGIM.