This course studies telecommunications and computer networks. It begins by discussing data communications, computer interfaces, transmission media, and error detection and correction. Wide area, metropolitan, and local area networks are studied in the context of the International Standards Organization/OSI Model. Emphasis is placed on all ISO/OSI layers. This course will also study basics of network security and social and ethical implications of networking and telecommunications. Prerequisites: CS 250 - Algorithms and Problem-Solving II, one 300-level CS course, and CMST 191 - Introduction to Public Speaking. Grade or P/NC. Offered at least once annually on Winona and Rochester campuses.