Education and Career Forum

How I can obtain online diploma in wireless technology after Btech...

I am sorry but there is no such thing as an online diploma as the basic concept behind getting a diploma irrespective of the field is the practical exposure that the people tend to get.
That is why people prefer doing diploma instead of 11th,12th standard.
One cannot stay home and get this practical exposure and thus whichever institute you find offering an online diploma might be a scam or is probably not good enough.