Using either the OSI Reference Model or the TCP/IP Protocol Suite, describe how each layer of the Model/Suite represents the communication flow between organizational levels and across departments/division of an actual hierarchical business. Be sure to include a communication flow diagram showing the logical and physical connections. Answer preview:OSI model (Open Systems Interconnection) is a reference model which represents how various applications communicate over a particular network. The main purpose of OSI model is to help in guiding various developers especially in ensuring that communication products and software programs operate efficiently. OSI model is commonly used by vendors in communications. The ISO model has seven layers which help in the communication process. In this kind of arrangement, each layer has a role to play, for instance, each layer serves the layer above it and in turn, it is served by the layer below it. In the case, a message is to be sent, the message or data will flow down through the layers in the source computer all the way to the receiving computer. The paper discusses about how various layers of the ISO model epitomizes the flow of communication between organizational levels and across departments in a hierarchical business.Word: 1,250
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