They use outside recruiting companies to go through applications. There are typically two rounds of interviews. I only went through the first round where the person (from the recruiting company) first contacted me through email and set up an appointment. Because the interview was geared for college students, the questions tend to be generic questions asking about what I hoped to gain from the internship, what I was involved in college, and how I worked in team settings. I had to personally email her asking what results were.