How to Access Ethernet
You must have your computer's MAC address registered with UC Davis in order to use campus wired ethernet ports. To do this, you must be a UCD student or somehow have a UCD login/password. If you are going to live in the dorms, you can follow the instructions here http://www.housing.ucdavis.edu/computers/computer_registration.asp. If you lived in the dorms, you likely did this. If not, it's painless — just go to http://computingaccounts.ucdavis.edu and click on "Ethernet registration."