2. New technology offers a solution to the slow-down that doesn't necessitate broadband. Services like net-zero and EarthLink are now offering "high-speed dial-up." According to ads for these services, you can get connection speeds that are five times faster than traditional dial-up service.
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4. File Compression File compression is an evolving technology, and it doesn't work on every file type yet. The on-the-fly file compression utilized in high-speed dial-up can't be added to the file types specified above because of the nature of the data.
5. Filtering When you type a URL into the address bar of your browser, you are sending a request for a specific page. When the information is sent back to your machine, the hidden code executes a program that launches the advertisement. In order for the pop-up to pop, that hidden code must display parameters that tells your machine what size the ad is, where on the screen it should appear, and other details about the ad.
6. Caching The first time your browser loads a Web page, it has to load the entire thing, along with all of the images it displays. If the browser saves the images and text, then the second time it loads the same page it can check for duplicates. If an image has not changed, there is no need to download it again. This process of saving a file in the hopes of reusing it in the future is called caching.
7. The Bottom Line Now that you understand how it works, let's take a moment to look at how well it works. They decided to try out one of the more popular high-speed dial-up providers, NetZero, to see how much the service sped up a dial-up connection.
