They used STAR technique. It was a typical interview that lasted 30 min. The recruiter was somewhat standoffish and I knew I didn't get the job walking out but I had a fine experience. Glad to have the practice.

Interview accepted through on campus recruiting through a major university in the beginning of the fall semester. Sign ups were through the career center and done within a week on campus as a thirty minute interview. Notifications of offers were formally sent out in about two weeks. For interns there is only one interview in the process.