DATA COMMUNICATION (Basics of data communication‚ OSI layers.) K.K.DHUPAR SDE (NP-II) ALTTC ALTTC/NP/KKD/Data Communication 1 Data Communications History • 1838: Samuel Morse & Alfred Veil Invent Morse Code Telegraph System • 1876: Alexander Graham Bell invented Telephone • 1910:Howard Krum developed Start/Stop Synchronisation ALTTC/NP/KKD/Data Communication 2 History of Computing • 1930: Development of ASCII Transmission Code • 1945: Allied Governments develop the First Large Computer
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Vulnerabilities Hardware vulnerabilities. According to the network infrastructure diagram‚ we can see that there are 5 servers‚ 2 routers‚ 1 switcher‚ and 1 firewall. Each one of those servers is operate by a specific department‚ and all of those servers are connected to the main database server.The connection between each department’s server to the main database server take
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What is a hyper-connected world? It is the accelerating inter-connectivity between people globally at all time. This increasing connectivity has in so many ways made our lives so much easier and has also improved the standard of our lives greatly. This inter-connection has virtually managed to influence every aspect of our day to day lives. Social media‚ e-commerce‚ smartphones‚ healthcare – you name it! Digital connectivity has permeated it all and in fact our dependence on it is growing exponentially
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EasyJet Case Analysis EasyJet Airline Company Limited is a British airline headquartered at London Luton Airport. It is the largest airline of the United Kingdom‚ measured by number of passengers carried‚ operating domestic and international scheduled services on over 500 routes between 118 European‚ North African‚ and West Asian airports. Its founder and CEO Stelios Haji-Ioannou is known for innovative ideas and pioneer in the advertising/publicity in the airline industry. Business
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Theory Notes Task: Output Devices Make sure that you are familiar with all of the information detailed in this booklet. There are a number of tasks for you to carry out‚ be sure to read the information fully whilst completing the tasks. You could be asked about any of this in the test! Use the theory notes in from the teach-ict.com site to help you complete this booklet. TASK 1: OUTPUT DEVICES Output devices let you see data that has been processed or is stored on the hard disk
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simplicity‚ robustness‚ stability‚ fairness‚ optimality‚ and efficiency. 12.5 For fixed routing‚ a single‚ permanent route is configured for each sourcedestination pair of nodes in the network. 12.6 With flooding‚ a packet is forwarded to all other switches so that eventually all routes between source and destination are traversed. 12.7 Advantages: (1) An adaptive routing strategy can improve performance‚ as seen by the network user. (2) An adaptive routing strategy can aid in congestion control
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What’s Wearable Devices? Introduction Wearable technology‚ wearable devices‚ tech togs‚ or fashion electronics are clothing and accessories incorporating computer and advanced electronic technologies. History Wearable technology is related to both the field of ubiquitous computing and the history and development of wearable computers. With ubiquitous computing‚ wearable technology share the vision of interweaving technology into the everyday life‚ of making technology pervasive and interaction
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Video 1.06 Storage Devices Hard Drives Hard drives are comprised of platters Read/Write heads for each platter Read and write on top and bottom of platter Never exposed to magnets Data loss may occur 137 GB Limit Hard Drive size limited to 137GB Not a physical limit Limited by address the system can support 28 bit communications limited to 268‚435‚555 addresses equates to 137 GB Flash BIOS to upgrade hard drive interfaces PATA‚ SATA‚ SCSI‚ USB‚ and FireWire most common is the
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Brody Contreras 4/16/13 The Road Homework Annotation Guide: 1. I agree. If modern civilization were to end‚ I think that man kind would slowly die away after it’s fall because modern man is not capable of surviving the harsh Environment of the world. We will especially fall due to the lack of resources and will kill each other off for food. 2. I disagree strongly. Many people are evil people because they enjoy bringing pain to others and are selfish‚ thus worrying about only their
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Are "Bring Your Own Device" Programs Effective in Classrooms? Michelle A. Peterson Western Governors University 000346643 Are "Bring Your Own Device" Programs Effective in Classrooms? The world around us is changing every day. Technology grows exponentially‚ which makes it virtually impossible to keep up with the rapid changes. No longer do students carry pens‚ pencils and folders. Gone are the days of making numerous trips to the library and using a card catalog to find books that most
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