ERHAN BUYUKHAN COMPUTER NETWORKS NETWORK TELEPHONY –VOICE OVER INTERNET PROTOCOL(VoIP) VoIP is a set of technologies that enable voice calls to be carried over the internet (or other networks designed for data)‚ rather than the traditional telephone landline system-the Public Switched Telephone Networks(PSTN). VoIP uses IP protocols‚ originally designed for the internet‚ to break voice calls up into digital ‘packets’. In order for a call to take place the separate packets travel over an IP
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SMART GRID Abstract--The Smart Grid is the integration of Electrical & Digital Technologies‚ Information and communication which facilitates integration of business processes and systems to yield real measurable value across the power delivery chain. It is an intelligent future electricity system that connects all supply‚ grid and demand elements through a communication system. Smart grid delivers electricity to consumers using two-way digital technology that enable the efficient management of
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Does the mere mention of disaster recovery make you a bit nervous? If so‚ you’re not alone. Many businesses risk grave losses due to failures and disasters yet continue to depend on their tape backups to help them recover successfully should a major outage occur. The thought of implementing a more appropriate disaster recovery plan can be daunting; to the point which many simply push it off until later. Unfortunately ’later’ often ends up being after the business has suffered a major loss from which
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11am one Friday morning‚ one of their workers excavated into some telephone and electricity cables. This affected a building down the road where a bookshop‚ MM Books is located. MMBooks had to close their shop for four hours because of the power outage. When power was restored at 3pm‚ MMBooks realized that all of their computers no longer worked. The computer technician they called‚ Larry Lim‚ said that a huge power surge had damaged the computers. Advise MMBooks. In this case‚ our group has
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References: Amazon Web Services Five-Day Outage Sparks Debate About the Cloud. (2011). «Channel Insider»‚ 1. Amazon.com Investor Relations. (2012‚ June 30). Quarterly Results. Retrieved from http://phx.corporate-ir.net/phoenix.zhtml?c=97664&p=irol-reportsother Amazon.com. (2012). Kindle. Retrieved
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Anthropogenic hazards or human-made hazards can result in the form of a human-made disaster. In this case‚anthropogenic means threats having an element of human intent‚ negligence‚ or error; or involving a failure of a human-made system. This is as opposed to natural hazards that cause natural disasters. Either can result in huge losses of life and property as well as damage to peoples’ mental‚ physical and social well-being. Fire Bush fires‚ forest fires‚ and mine fires are generally started by lightning
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Network‚ known as PSN‚ is a free online platform for users to play and buy online games‚ interact with friends and family and surf the net provided by Sony Computer Entertainment‚ Inc. On 19th April 2011‚ PSN was struck by hacker and this resulted in an outage of PSN. It was believed that approximately 77 million users’ personal information was stolen by hacker. This case is highlighted because it vividly depicts the issue of data leakage and its effect to the users. I will firstly discuss how PSN works
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remain balanced at all times to ensure grid stability‚ this variability creates substantial challenges when a large amount of wind energy is integrated into an electrical grid (Hirth and Ziegenhagen 2015). Transmission networks currently deal with outages of conventional power plants and instantaneous changes of electrical demand by compensating with reserve capacity (Zugno and Conejo 2015). The variability of renewable power sources such as wind power‚ are unlike those of conventional power generation
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On the outside you would think that a blizzard would be very different than a hurricane. They are quite similar in their makeup and destructive powers. They are just two of the natural disasters that our planet has to offer and seem to becoming more common. Hurricanes and blizzards are two of the worst natural disasters that are like twisted sisters in Mother Natures destructive family. I will show how they are so closely related from their startup to finish. Blizzards are heavy snowstorms
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Though it is true that information and data on the cloud can be accessed anytime and from anywhere at all‚ there are times when this system can have some serious dysfunction. It should be aware of the fact that this technology is always prone to outages and other technical issues. 3.2.2 Security in the
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