Online test consisted of 3 sections, aptitude ,c/c++, java. There was option between java and c/c++ part. The aptitude was on easier side with quite a lot question were really basic. C/ C++ question were requiring crystal clear concepts of basics of coding as well as it consisted question on Computer Architecture and Organization(CAO) , Microcontroller, Microprocessor. Try to attempt all easy question in aptitude part..
This was first round of technical interview. In this round interviewer started with projects and asked everything about the projects done in Summer. He asked general question like what challenges you faced? How you tackled those challenges? Then he came to CAO asked question on its concepts. Then he asled about microcontroller, microprocessor. Then he eventually moved towards coding and asked some pointer questions, linked list question and then some more data structure question. He expected explanation of every step we were performing.
He started directly with Data Structure and Algorithm. Asked some questions based on those for almost 20-25 mins. Then he asked some question on projects done by me based on my CV. He also asked some HR question like about transition from Electronics field to Software inclined field. Why sling media?, etc.
Listen to PPT really well. When interviewer gives chance to ask questions., then do ask question. Show your interest to work in company and your readiness to learn new things. Stay Calm and most importantly be honest. All the best.