The discussion assignment provides a forum for discussing relevant topics for this week based on the course competencies covered. For this assignment, make sure you post your initial response to the Discussion Area by the due date assigned. To support your work, use your course and text readings and also use outside sources. As in all assignments, cite your sources in your work and provide references for the citations in APA format. Start reviewing and responding to the postings of your classmates as early in the week as possible. Respond to at least two of your classmates. Participate in the discussion by asking a question, providing a statement of clarification, providing a point of view with a rationale, challenging an aspect of the discussion, or indicating a relationship between two or more lines of reasoning in the discussion. Complete your participation for this assignment by the end of the week. The OSI Model In this assignment, you will study the network architecture and learn how information moves between the layers of the OSI model. Using the South University Online Library or the Internet, research the following: Network architecture The OSI model Based on your research and understanding, respond to the following: What is a telecommunications network protocol? What is telecommunications network architecture? Select a network protocol and provide details on the steps that preceded the formal adoption of the protocol by the industry. Make sure you provide dates and organizations which were involved in the process. How are analog signals converted to digital signals for transmission over a telecommunications network? What are the advantages and disadvantages of digital over analog? What is the role of digital modulation in transmitting digital signals from source to destination? Make sure you use diagrams to support your discussion. In the OSI model, three layers divide the application layer from the network layer: presentation, session, and transport. The application layer is closest to the end user and the network layer is closest to the physical network. Based on the functions of the three layers between application and network, how do you anticipate the implementation of these layers changes from application to network, as information is moved from one layer to another? What is the importance of understanding the functions of these layers? How are layers represented in the TCP/IP model?