It was online mode. Few questions where asked regarding oops concepts and c language. They asked to write a code with the help of online editor which was screen shared and asked to explain the code. Questions regarding your project were asked.

4round in total 1st round was aptitude, contains logical, verbal, quant and technical sections; has sectional cut-off. no negative marks,. so attend all questions. Technical section had program output, error spoting, some concepts from data structure, operating sys, c++ concepts, time complexity of programs(bigO n al) 2nd & 3rd round were soo easy.. those were just formal interviews.. final round teliphonic interview.. in technical very basic concepts that u studied in engg(need not to worry), n to explain about my projects.