Only one interview. Since it is a coop position they do not expect you to answer correctly always. You could make it in the general background questions and can answer well in how would you contribute to the company.

Applied it through college program, it took 2 weeks to get the offer since the interview. Questions were very common such as general, behavioural, and technical questions. Some of technical questions have done verbally, and some of them were written. Tip: you must know database like drawing ERD, querying commands (join, select, delete, etc), and OOP concept is very important.