I applied for an internship through my university career services and was invited for an on-campus interview. The interview was a 30 minute technical interview. The interviewer started with questions about my project work. Further, asked questions on languages like C++/Java whatever you say you are comfortable with. Made me write a regular expression, solve a hexadecimal to decimal conversion, write a class that prints something on creating an object. The tougher part was basically in-depth test about data structures and their complexities.