A Web server is the server software behind the World Wide Web. It listens for requests from a client, such as a browser like Netscape or Microsoft’s Internet Explorer. When it gets one, it processes that request and returns some data. This data usually takes the form of a formatted page with text and graphics. The browser then renders this data to the best of its ability and presents it to the user. Web servers are in concept very simple programs. They await for requests and fulfill them when received.

Web servers communicate with browsers or other clients using the Hypertext Transfer Protocol (HTTP), which is a simple protocol that standardizes the way requests are sent and processed. This allows a variety of clients to communicate with any vendor’s server without compatibility problems.

Search engines can help you find specific information on the Internet, but they also flood you with large amounts of irrelevant information. With a little bit of extra effort on your part, though, you can make sure that a search engine finds exactly what you want, as quickly as possible. The next time you use a search engine, try some of the following tips.

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Learning About ASP and Server-Side Programming This article describes what ASP and server-side technologies are. There is a brief tutorial that walks you through creating your first ASP pages. This article assumes that you are already comfortable with HTML and you’re interested in learning more about other Web technologies. ASP is a Web server scripting language from Microsoft used for embedding dynamic content into HTML Web pages. ASP stands for “Active Server Pages.”

ASP is a server-side scripting language. What distinguishes ASP from something like client-side JavaScript is that the code is executed on the server. This means that the server executes your script and translates the content to HTML before sending it to your Web browser. All of the heavy lifting and computing is done on the server. When a user looks at the source for the Web page created by your ASP file, they have no way of knowing what’s going on behind the scenes—all they see is the end result.

TWO OF THE GREATEST THREATS TO EVERY COMPUTER ARE VIRUSES AND WORMS, WHICH ARE NOTHING MORE THAN COMPUTER PROGRAMS THAT SOMEONE EITHER WROTE FOR "FUN," OUT OF CURIOSITY, OR AS A CHALLENGE TO CREATE THE MOST DESTRUCTIVE VIRUS OR WORM POSSIBLE. Although some viruses and worms are completely harmless, the majority of viruses and worms cause a wide range of trouble, from displaying nonsensical messages on the screen, to making the keyboard work erratically, to deleting files or entire hard disks. While a virus or a worm won’t always cause any damage, it is always unwanted on any computer. Table 1 lists some of the more infamous viruses, worms, and Trojan horses throughout history: