This course is an introductory course on computer networks. Topics include network architectures, circuit and packet switching, local and wide-area networks, network technologies and topologies; data link, network, and transport layer protocols; routing, addressing; congestion/flow/error control. Application layer protocols are covered as well. Physical layer issues are overviewed. Followed reference models are TCP/IP for network and upper layers, OSI for data link layer and IEEE 802 for MAC protocols.