This telecommunication assignment delves into key concepts within the field. It begins with an exploration of Layer One, covering amplitude and frequency modulation techniques, along with a comparative analysis of various Layer One media types and their suitable environments. The assignment then examines data transmission, specifically focusing on error correction methods and different multiplexing techniques such as Frequency Division Multiplexing (FDM), Time Division Multiplexing (TDM), and Wave Division Multiplexing (WDM). Furthermore, it discusses the functions of traditional modems in Wide Area Networks (WANs) and contrasts the characteristics of Ethernet and Token Ring Local Area Networks (LANs). Finally, the assignment concludes with a detailed listing of the OSI protocol stack, including layer names, functions, and examples.