Table of Contents Part 1: General review of data link layer 2 a) Explain the working principles of the data link layer. 2 b) Is controlled access better than contention for media access control? Discuss. 2 c) Why is error detection important in this layer? What is being measured? 3 d) Identify three significant noises that can cause errors in data communication digital circuits. Briefly explain. 3 Part 2: General review of error correction 4 a) Why is cyclical redundancy
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Reginald Monroe-@02516632 Summary of OSI layers & Security OSI stands for Open Systems Interconnection and it was developed by the Europeans in the 1980’s. OSI is divided into two major fields‚ an abstract model of networking and a set of defined protocols. The seven layers of the OSI basic reference model are listed and defined below (from bottom to top): 1. The Physical Layer – this layer describes the physical components of the various communications media‚ it also includes the electrical
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three main layers also known as the Epidermis‚ Dermis‚ and the Hypodermis. The Epidermis is the outermost layer that shields the body and consists of four cells types and five distinct layers. The Dermis is right under the Epidermis which contains strong connective tissue. This layer also contains our hair follicles that help regulate our body temperatures‚ nerve endings which let’s us sense‚ and sweat glands which help the skin keep moist. Lastly‚ the Hypodermis also known as the “Fat layer”‚ it isn’t
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CHE 151-50 Fall 2013 Lab report Isolating the Components of a Three Component Mixture The purpose of this experiment was to separate the component of three mixtures sand‚ sodium chloride and calcium carbonate then calculate the percentage by mass of each component recovered from the mixture. The other purpose of this experiment was to show us the students the concepts associated with physical and chemical properties of substances. Me and my lab partner‚ obtained a mixture of a un known
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for a shot at the summit. About half of those people make it to the top. 280 people have died trying to climb Everest or make it back down. Yet despite the cost‚ even your life‚ the number of attempts and summits is on its way up every year. In Into Thin Air by Jon Krakauer‚ Everest stands as symbol of dreams and hopes; for the westerners. To the workers of the mountain‚ the Sherpas‚ it was a symbol of God and their way of life. Above all Everest was a symbol that commanded respect. Throughout the
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and tablets are there to give us entertainment when we suffer from boredom. We all need a break occasionally‚ right? Yes‚ but this technology is consuming us. Plastered all over these different ways to cure boredom‚ are unrealistic expectations. Too-thin bodies‚ filtered faces‚ photoshopping to the extreme. Commercials and movies are over sexualizing women‚ making a woman’s worth based on her body. The overload of make-up adverts claiming to hide “imperfections‚” various weight loss solutions and implanting
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DRUG ARTICLE ANALYSIS DRUG TRADE NAME: Restasis DRUG GENERIC NAME: cyclosporine ophthomalic emulsion 1. STRENGTHS OF DRUG ADVERTISMENT: • The article states the relationship of inflammation and the eyes ability to produce tears may be suppressed due to Chronic Dry Eye. Restasis is a prescription medication indicated to increase tear production in patients with these conditions. The article is correct that ocular inflammation is associated with keratoconjuctivitis sicca.
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In this passage from Jon Krauaker’s Into Thin Air‚ Jon Krauaker does not display the sense of accomplishment that one would expect from achieving such a difficult endeavor. He really displays a sense of grief and dissatisfaction from what he had accomplished. For taking a risk as life threatening as this‚ in Krauaker’s eyes‚ he couldn’t possibly be proud of what he had done when so many men had lost their lives during the same excursion that he journeyed on. Throughout this novel‚ Jon Krauaker
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has become a main child survival strategy in almost all countries in the African region‚ creating a unique opportunity to scale up newborn health interventions using IMCI as a vehicle. Incorporating newborn algorithms in IMCI and strengthening the components of the strategy related to the health system and community will directly impact newborn health. Some of this work has already begun as generic IMCI guidelines and training materials have been revised to include the first week of life. Many countries
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Task 1 To help you improve your overall physical fitness‚ produce an information sheet that describes one method of assessing the main components of fitness i.e. flexibility‚ strength‚ BMI‚ speed‚ power and aerobic and muscular endurance. P1 Flexibility- The range of movement possible at joints The sit and reach test is a common measure of flexibility‚ and it specifically measures the flexibility of the lower back and hamstring muscles. This test involves sitting on the floor
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