your experience, project you have done, some basic programming questions. It is not hard. Even if you didn't reply well. It seems that you will also get a next process of interview, which is go solve two problems provided by them. The two problems are a little bit harder. But you have enough time to finish them

Submitted resume. Then they called and asked standard questions from my resume, educational background, SAT/GRE scores, grades, GPA, etc. All this was standard stuff. They also asked several personality questions about my strengths/ weaknesses, hobbies, interests--all of the questions were pretty standard type questions you'd see at any interview. I had no preview prep so I just winged it. Lastly, there were several standard object oriented programming questions. Read throught the wiki page, and you will be fine. They emailed me a programming question to solve and a "hypothetical scenario" problem that I had to write an essay about. No word on acceptance or not. Interview experience seemed easy, but I haven't gotten any word so who knows....