Cryptography is the science of converting data into a secret code to hide the meaning of the message during transmission. Cryptographic systems provide the following security services: • Confidentiality‚ by ensuring that only authorized parties can access data. • Integrity‚ by verifying that data has not been altered in transit. • Authentication‚ by proving the identity of the sender or receiver. • Non-repudiation‚ by validating that communications have come from a particular sender at a particular
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What kids haven’t played with lasers? We have all loved the laser fights in movies like Star Wars. Who wouldn’t want wield a laser around while fighting an enemy. Did you know that the term laser came from an acronym meaning “light amplification by stimulated emission of radiation.”? It should actually be all capitalized but for simplicity it isn’t. The first working laser was actually demonstrated by Theodore Maiman at the Hughes Research Laboratories back in 1960. The strength of early lasers
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Haille Selassie “Haile Selassie was an emperor of Ethiopia whose influence as an African leader far surpassed the boundaries of his country. Although his popularity declined near the end of his sixty-year reign‚ Selassie remains a key figure in turning Ethiopia into a modern civilization.” In 1931 Selassie began to develop a written constitution (a system of basic laws of a country) to symbolize his interest in modernization and intention to increase the power of the African government‚ Haile
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Bogota Bogota is a vibrant city that is situated below the cold Andean Mountains and offers a mixture of modern shopping malls and historic colonial buildings. The City’s main centre is the La Candelaria where there are restaurants‚ bars and hotels in amongst the ancient homes‚ churches and convents. The South of the City is where the working class stay and is still well known for the drug industry but North of the city is filled with hotels and entertainment in the districts of Zona Rosa and Zona
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Page Notes Answer 12 - 13 STP shield Performance Protects from EMI. Shield must be fully enclosed 15 Fiber Optic Cable Not susceptible to outside EMI or crosstalk interference‚ nor does it generate it . Can exceed 500Gbps 35 Cable Bandwidth is a function of Reducing frequency or distance (resistance) increases the maximum bandwidth because SNR improves 37 100 BaseT Ethernet Operating Frequency 31.25MHz 115 100Base-T4 Ethernet Existing CAT3 complaint systems could also support fast Ethernet
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Practice Question #1: A gambler claims he can predict the roll of a die more often than chance would predict. To test this‚ a die is rolled 100 times and the gambler guesses the number that comes up twenty times and guesses incorrectly the other eighty times. Is this strong evidence that the gambler’s claim is true? a. Specify the null and alternative hypothesis for this problem. p = probability gambler guess correctly for an individual roll null (Ho): p = 1/6 alternative (Ha): p > 1/6 b
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What is Elasticity? - Elasticity refers to the degree of responsiveness in supply or demand in relation to changes in price. If a curve is more elastic‚ then small changes in price will cause large changes in quantity consumed. If a curve is less elastic‚ then it will take large changes in price to effect a change in quantity consumed. Graphically‚ elasticity can be represented by the appearance of the supply or demand curve. A more elastic curve will be horizontal‚ and a less elastic curve will
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Misuses of Language (Linguistic Misuses) 1. Ambiguity – a term/sentence has 2 or more diff reasonable meanings a. Lexical詞匯Ambiguity e.g. I don’t like love games b. Syntactic Ambiguity e.g. The CE wants ICAC to help corrupt officers 2. Shift/distortion of meaning – original meaning is shifted from 1 sense to another or distorted inappropriately e.g. stricter discipline doesn’t mean to torture children; when was you the richest? 3. Incomplete meaning – A sentence may be grammatically correct but
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Party‚ but realizes that if he should die hating them‚ he would be happy to die a free-spirited martyr for his beliefs. (pg. 256‚ 281) “To die hating them‚ that was freedom.” (pg. 281) Symbolism Metaphor Winston comes to grips with the fact that although he dislikes Big Brother with all of his being‚ opposing them would be his ultimate freedom‚ even if that mean dying for his beliefs. “The long-hoped-for bullet was entering his brain” (pg 256) Winston and Julia meet above the
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Assignment Task for Unit: Improving performance of the work team Presentation preparation Centre Number: Centre Name: Learner Registration No: Learner Name: TASK The purpose of this assignment is for you to develop an understanding of the organisational goals of the team and how to motivate team members to achieve these. You will need to prepare materials (such as hand-outs‚ OHP (Power-point) slides) for giving a presentation to your team outlining what the organisation expects your team to
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