Essay Layering & Internet Model

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There are three parts to this assignment relating to each lecture in Module 1. Part 1: Layering and the Internet Model Imagine that a technology organization has been in business for decades, and that the organization developed its own method of computer-to-computer communication. Because this method of communication only occurs within this organization, it is not layered, but rather is designed to operate as quickly and efficiently as possible on the custom hardware by using the least amount of overhead possible. The organization continues to create its own communication hardware and software that works with modern computers, but the CTO of the organization is considering replacing this custom communication solution with the adoption…show more content…
Thus Cost will be reduced as there will be many vendors offering the products at different layers. Competition and compatibility of the products will be more, which will in turn reduce the cost. Topic 2: The Disadvantages of a Layered Model Identify and describe the disadvantages of a layered solution when compared to the organization’s non-layered solution. 1.The processing and data overhead because for any communication to take place it has to go through all 5 layers (internet model ) and 7 layers for OSI model. 2. The data overhead as it adds headers at each layer as the datagram moves down the stack. Thus part of bandwidth is used for the protocol headers instead of message/data. 3. Addition of headers at each layer also increases the computation overhead. Topic 3: The Layers of the Internet Model Identify the layers of the Internet Model, and explain what functionality each layer would provide for the organization, if adopted. Layers of the Internet Model : 1. The Physical Layer 2. The Data link layer 3. The Network layer 4. The Transport layer 5. The Application layer Physical layer : The Physical layer is the lowest layer of the internet model and is concerned with the transmission and reception of the unstructured raw bit stream. It describes the electrical/optical, mechanical, and functional interfaces to the physical medium, and carries the signals for all of
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