[Rob]

Tnx rob. And can u tell me at the time of m.tech . When we choose specilization subject?  And how we ppl know whuch iit is best for we ppl. How to get decided??

Bro,

Go through the research profiles of the profs of the respective IITs. Since your focus seems more towards job. Then I will suggest older IITs. For research, IISc is also a very good option. Just search about the IITs in quora. Hopefully you will get a fair idea.

Yours Sincerely
Misal Rob