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How High Speed Dial Up Works


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How High Speed Dial Up Works

  1. 1. How High-speed Dial- up Works S1170047 Takahide Ishii
  2. 2. Outline of How High-speed Dial -up Works ● Introduction to How High-speed Dial-up Wor ks ● High-speed Dial-up: Acceleration Servers ● High-speed Dial-up: File Compression ● High-speed Dial-up: Filtering and Caching ● High-speed Dial-up: The Bottom Line
  3. 3. What's High-speed Dial-up Wor ks? ● A typical of the High-speed Dial-up services a re NetZero and EarthLink. ● These services called “high-speed dial-up”. ● These services connection speeds are five tim es faster than traditional dial-up service.
  4. 4. Acceleration Servers ● High-speed dial-up providers have cut down on this back-and-forth by creating a system th at allows the conversing machines. ● This server take 45 seconds with a "normal" d ial-up service becomes maybe a 30-second pr ocess with a high-speed service.
  5. 5. File Compression ● The key element of high-speed dial-up Intern et is file compression. ● There are two types of file compression: lossy and lossless. ● Text and other files that need to remain perfe ctly intact during the compression process us e lossless compression.
  6. 6. Filtering and Caching ● high-speed dial-up providers have bundled a pop-up blocker into the software they send t o subscribers ● This pop-up blocker is programmed to recog nize those lines of code that spell out the ad parameters ● When it sees those tell-tale lines of code, it re jects the ad's request to be displayed.
  7. 7. The Bottom Line ● High-speed Dial-up services would seem that a clever combination of fairly straightforward technologies has helped to overcome some o f the speed bumps of dial-up Internet. ● These advances serve to prolong the life of di al-up Internet and provide an alternative for t hose who are tired of standard dial-up but no t quite ready for the leap to broadband.