The Exam Commons uses IP filtering instead of passwords for exam security. “UNL Testing Centers” is the name of the IP group, and this includes IPs in the DLC Exam Commons locations as well as the SSD Testing Center. If you create a Mobius Assessment for students to take in the DLC or SSD office, make sure to follow the instructions in the linked document to ensure that IP filtering is enabled for your exam:
https://its.unl.edu/DLC/documents/Mobius%20Assessment%20IP%20Filtering.pdf