M.Tech

You can start preparing from today itself. If you have ample amount of time join a coaching class near your residence or else go for online course. There are many tutors like for eg. Ravindra Babu. His videos are really helpful.

B.Tech and M.Tech from the same branch is the best option because in that, you have a vast experience in that field that would be beneficial in every form.

IPU conducts its own exam (IPU CET M.Tech) for admission in its affiliated colleges. This is an offline exam conducted in May every year.

Now a days, most Public sectors recruie the candidates on the basis of GATE, like BEL, IOCL, BSNL etc. So, you can prepare for GATE, then you can apply for these companies, and then as per number of applications received, companies conduct written test/ interview. Another option is "engineering services" for which you have to prepare your subjects like digital electronics, signals, Digital signal processing, control system, Engineering Mathematics etc. So, focus on these subjects.

Hi Mayank,
BITS HD Entrance Exam is similar to GATE examination. If you are clear with your B.Tech subjects, and in touch with the concepts, you will do well. Preparation of GATE, gives you an upper edge in BITS HD Entrance exam, as the questions are not very different. All the best.

Can you please elaborate on the part "on behalf of Wipro"? It would be easier to answer your query then. However, for the eligibility criteria of NET Exam, check this link: https://cbsenet.nic.in/CMS/Public/View.aspx?page=80
Best of Luck.

If you are talking about the GATE exam syllabus pattern, then you must go in with the course syllabus of your B.Tech electronic Engineering and download the syllabus from the internet.