Systems and models of communications technologies: Shannon-Weaver, von Neumann, and the OSI model -- Basic concepts of electricity -- Modulation schemes -- Signaling formats, multiplexing, and digital transmissions -- PSTN to CPE -- Circuit switching -- Mobile wireless technologies -- Packet switching and local area network technology -- The language of the internet: TCP/IP -- Network security and management -- Voice-over-IP -- Wireless local area networks -- Video basics -- Digital media -- The basics of MPLS networking.