Question

At the time of her graduation, julia obtained permission from several people who will serve as references for her. two years later, she is interviewing for a new position and knows that some employers she has interviewed with will be performing background checks on her. in regard to her references, she should

Answer 1

I believe the answer is:  send a message to her references, letting them know that requests for information will be forthcoming, and attach a current résumé.

By sendding the message to the references, they could prepare the things that they should say to promote julia in case the employers conducted a background check on her. References from other people especially in similar professional field usually would dramatically increase the chance of hiring.