Q. 1 Describe briefly the types of models used for communication model and different (20) communication task (a) Describe the OSI seven-layer model. Name each of the layers in the model and ws the ordering describing the areas of function that each layer is responsible for. Contrast the OSI model you have just described with the TCP/IP reference model. Using a diagram show the correspondence between relevant protocol layers in the two models. Discuss the relative merits of each of these models in the context of modern computer networking. (b) (c)