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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A natural disaster is a major adverse event resulting from natural processes of the Earth; examples include floods‚ volcanic eruptions‚ earthquakes‚ tsunamis‚ and other geologic processes. A natural disaster can cause loss of life or property damage‚ and typically leaves some economic damage in its wake‚ the severity of which depends on the affected population’s resilience‚ or ability to recover.[1] An adverse event will not rise to the level of a disaster if it occurs in an area without vulnerable
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Mining disaster in the past have been referred to mining accidents claiming five or more lives. Mine disasters once were really common. In the single year of 1907 there were 18 coal mine disasters.. Among the disasters in 1907 was history’s worst the Monongah coal mine explosion‚ which claimed 362 lives and impelled Congress to create the Bureau of Mines. I will discuss this disaster more later in this paper. Mine accidents have declined dramatically in number and severity through
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Disaster Plan Assignment Read the company descriptions below and select one. Create a disaster plan for your selected organization that includes how you would recommend the company back up and protect network data. Your plan should be 1‚250 to 1‚500 words in length‚ and your recommendations must be based on the RAID system of data protection. Your plan must also address how the company should protect against natural disasters that might occur in its geographic location. Include any charts‚ graphs
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Hurricane a Natural Ocean Disaster The ocean has been shaping our land as we know it for millions of years. It is a beautiful part of our Earth‚ nonetheless it has the greatest influence on some of the deadliest natural disasters to us and these disasters alter our shorelines and lives as we know it. Hurricanes are among the deadliest natural disasters known‚ those that live near the Gulf or eastern coast know of and prepare for the damages it can cause. Many have heard of the devastation hurricanes
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ROLE OF STUDENT IN DISASTER MANAGEMENT Knowledge on first aid‚ rescue and evacuation. Help in the preparation of the school disaster contingency plan. Aware the parents and community on various types of hazards and what are the preparedness measures to be taken. Plantation in the school premises. Boosting the morale of the community after the disaster. Senior students can help villagers in preparing the Village Disaster Preparedness and Response Plan. The students
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Natural Disasters are presented to us in various forms. Earthquakes‚ tsunamis‚ hurricanes‚ volcano eruptions and tornados have been the causes of many devastating events seen throughout history. Preparation is needed to increase the chances of overcoming the destruction of a natural disaster. but unfortunately‚ some disasters may occur without warning and often increase havoc in more ways than one. Effects on The Economy • Hurricanes and earthquakes can pose a threat to gas prices by damaging
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The Space Shuttle Challenger Disaster – Organisational Causes Introduction The Space Shuttle Challenger disaster has been well investigated and analysed as a typical management case by numerous researchers. Although the disaster is the direct result of a technical issue‚ the hardware failure of a solid rocket booster (SRB) O-ring caused by abnormally low temperatures‚ there is an unambiguous relationship between the disaster and numerous organizational factors such as communication (Gouran et
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UPS COMPETES GLOBALLY WITH INFORMATION TECHNOLOGY Q1. Inputs‚ processing‚ and outputs are the three activities for the UPS’s package tracking system. The inputs include package information‚ customer signature‚ pickup‚ delivery‚ time-card data‚ current location‚ and billing and customer clearance documentation. Processing is transmitting the data to a central computer and stored for retrieval. Data are also reorganized so that they can be tracked by customer account‚ date‚ driver‚ and other criteria
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the 26th of April in 1986 one of the worst nuclear disasters in history occurred at the Chernobyl nuclear power plant in the Ukraine. The number 4 reactor at the Chernobyl Nuclear power plant ended up exploding after several errors that occurred during a scheduled safety systems test. The explosions released large amounts of radioactive materials into the sky and it was spread over great distances by wind streams. The repercussions of the disaster are only now being better understood today. The
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