This document contains an exam for IT 505 with 20 multiple choice questions worth 2 points each about topics such as back-end networks, LAN interconnectivity issues, data rate determinants, signal attenuation, optical fiber characteristics, servers, middleware, Frame Relay, ATM, WAN protocols, computer security objectives, types of attacks, and mechanisms for denial-of-service. It also includes 3 essay questions worth 10 points each about back-bone networks, middleware, and MPLS and 1 essay question worth 30 points describing various computer security mechanisms. Students are instructed to submit only their multiple choice answers in word document format without repeating the questions.