the OSI model and how it relates to a network. Your response should include answers to the following: • On which layers of the OSI model do WAN protocols operate? • What are some of these protocols? • On which OSI layers do switches and routers operate? • If routers reside at more than one layer‚ what is the difference between the OSI layers? Introduction: The OSI model was introduced in 1984. Although it was designed to be an abstract model‚ the OSI model remains
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18/03/2013 Discuss how the Bradshaw model can be used to model the fluvial characteristics of a river. (10 Marks) The Bradshaw model is a geographical model that shows us how the characteristics of a river changes between upstream to the downstream. The Bradshaw model allows us to see do the river’s characteristics such as‚ average velocity‚ channel depth‚ load quantity and particle size of the load‚ increases or decreases and how much do they change. However this model can’t be exactly right for all
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Essay on Good Role Model All of us would like to think of ourselves as possessing characteristics of a good role model for children. Unfortunately‚ role models are becoming scarce with today’s acceptable tolerance of misguided behaviors. For instance‚ one star athlete is arrested for rape‚ while another is charged with assault for a physical altercation against teammates. If you want to possess qualities of a good role model for children‚ you must first look past these misguided and often out of
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OSI Model Joshua M. Grooms The Open Systems Interconnection model‚ or the OSI model‚ is a way to sub-divide a communications system into smaller‚ more manageable parts known as layers. A layer is a grouping of functions that have similar purpose that either provide services to the layer above it or receives services from the layer below it. On which layer of the OSI model do WAN protocols operate? WANs are managed by the protocols that exist in level 2‚ the Data Link Layer‚ of the OSI
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Group-buying was appeared in the mid-1990s‚ and been popular in recent ten years as a business-to-consumer (B2C) transaction. Group buying‚ means provides products and services with deep low prices if buyers reach a certain number. Coupons are provided by manufacturers or retailers as a way of promotion. They usually distributed via mail‚ newspapers‚ magazines‚ mobile phones and Internet. The early group buying business model has lots of problems‚ one of them is time factor. Retailers offer the discounted
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Business Modelling For Enhanced Communication Business Modelling is the use of models and methods to understand and change the organisations. The goal is to reduce the communication gap between different types of people or groups that can be either business‚ social or personal. This has been presented in the following ways:- * Different level development * Exploring different viewpoints. * Describing different aspects. This is a method to research and present the different perspective
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Introduction The waterfall model is the most common model of all software development life cycle models. It is very simple to understand and use. In a waterfall model‚ each phase must be completed before the next phase can start. At the end of each phase‚ a review takes place to determine if the project is on the right path and whether or not the project should be continued. Here phases do not overlap with each other. Waterfall model is a sequential design process in which progress is seen
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The multifactorial model in health psychology is a leading paradigm that recognizes the multi-faceted nature of illnesses. It is not a clear-cut‚ simple case that a disease is caused by a singular factor. The fact is that decades if not over a century of modern research has led to the recognition that a host of factors‚ as well as their interactions‚ function in illness and health determination (Nevid & Rathus‚ p. 126). These varied factors that the multifactorial model indicates to be the range
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Mathematical Models Contents Definition of Mathematical Model Types of Variables The Mathematical Modeling Cycle Classification of Models 2 Definitions of Mathematical Model Mathematical modeling is the process of creating a mathematical representation of some phenomenon in order to gain a better understanding of that phenomenon. It is a process that attempts to match observation with symbolic statement. A mathematical model uses mathematical language to describe a system. Building a model involves
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Consistency Models1 David Mosberger TR 93/11 Abstract This paper discusses memory consistency models and their influence on software in the context of parallel machines. In the first part we review previous work on memory consistency models. The second part discusses the issues that arise due to weakening memory consistency. We are especially interested in the influence that weakened consistency models have on language‚ compiler‚ and runtime system design. We conclude that tighter interaction between
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