Spiders can also be restricted by network administrators so that they can not gather info from certain selected domains or websites. This protocol is similar to the old way of dialing up to another computers modem via phone lines, but you use the Internet instead. U Unix Unix is an operating system that was originally developed by Bell Laboratories around 1970. URL Uniform Resource Locator. Domain Virus A virus is a small executable program that attaches itself to other executable programs.
Viruses can do many things to damage a computer, but most virus's are relatively harmless.
For more information on viruses, see the Virus Page . Contrary to popular belief, you can not get a virus by viewing a web page or reading email. If there is any doubt where an email message came from that has an attached .exe file with it, the attachment can be deleted without harm to your computer. W Web Page A web page is one single page on a website on the World Wide Web. The storage space set aside on a server that holds your web pages.