Vanguard Client Relations Associate interview questions

I attempted to submit my application online but due to some technical troubles it did not submit. So I instead went the proactive route and mailed my cover letter and resume to both Vanguard's Malvern, PA and Scottsdale, AZ location. I was contacted about 2 weeks later via email from a Malvern recruiter who said they were going to forward my resume to Scottsdale, AZ. I was then contacted via phone by the Scottsdale recruiter. I had a 45 minute phone interview with him and then he asked when I could come on site to interview in person. I said that I still had a few days left until I graduated from college in Minnesota, so he asked what day I would be in Arizona. The morning that I told him I would be in town, he called me at 8:00am to schedule an interview for 10 days later. It was 2 1-hour interviews on site in Scottsdale. They asked a lot of behavioral questions and then gave me a case study for 30 minutes to work on and then explain my answers. My interview was on a Thursday, and the following Monday(5 days later) they called me and made the job offer.

I applied for the position through the careers services department at my university. I received a call from HR informing me that I had been chosen to come in for an interview. There were 7 other candidates. We had a general group discussion then we were separated for a 1 on 1 interview. The interviewer asked behavioral questions and hypothetical situations. Have examples prepared for questions like "when was a time you had to prioritize multiple tasks". Then another person asked me similar questions and gave me a situational case study. They're more interested in your thought process rather than right or wrong answers. All of the people were young and very friendly. Each person also held the position I was interviewing for so they could provide in depth responses to my questions.