M.Tech

You have done your post-graduation in computers and communication. There are many other rich technology based opening for you in market.

Yes, B.Tech+M.Tech will have the same prominence after 5 years as they have now.

I think you don't need to pursue any courses as you have got a good experience. Just keep it up and make your career in this field.

You are eligible to seek admission in regular M.Tech and are advised to appear in GATE for seeking admission in M.Tech.

Indian Institute of Science [IISC], Bangalore and National Institute of technology, Karnataka are the best colleges to pursue M.Tech in Karnataka.

You need to appear for GMAT exam. You can apply for executive MBA in college like:
1. ISB – Hyderabad.
2. Great Lakes.
3. IIMs.
A score around 700 is a decent score to get calls from top B-schools.

Both the fields are same, but B.Tech in IT will provide you better career options. So, you can opt for B.Tech in IT.

Manipal University, IISC-Bangalore and PES University are some of the known institutes.
Check the below-mentioned link:
https://engineering.shiksha.com/me-mtech-in-karnataka-categorypage-2-59-1-0-0-1-106-2-0-none-1-0

You can look for jobs in public sector. You can try to look for openings in various public sectors like:
1. CONCOR.
2. ONGC.
3. SAIL.
4. HPCL.
5. ISRO.
6. BEL.
There are many engineering colleges, who needs M.Tech students as an assistant professor. You can opt for those opportunities and prepare for PSU j