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er the web page no longer exists on the server or it is nowhere to be found. Solution: Check the address carefully and try entering it again. You might also see if the site has a search engine and if so, use it to hunt for the document. (It39。s Inter connection may be down. Solution: Take a stretch, wait a few minutes and try again. If you still have no luck, phone your ISP or system administrator. Bad file request Problem: Your web browser may not be able to decipher the online form you want to access. There may also be a technical error in the form. Solution: Consider sending a message to the site39。t have permission to access the page or your password is incorrect. Solution: Try typing your password again if you think you should have access. Failed DNS lookup Problem: DNS stands for the Domain Name System, which is the system that looks up the name of a website, finds a corresponding number (similar to a phone number), then directs your request to the appropriate web server on the Inter. When the lookup fails, the host server can39。t work, check the address and enter it again. If all else fails, try again later. File contains no data Problem: The site has no web pages on it. Solution: Check the address and enter it again. If you get the same error 4 message, try again later. Host unavailable Problem: The web server is down. Solution: Try clicking on the Reload or Refresh button. If this doesn39。ve been disconnected from the Net. Solution: Try clicking on the Reload or Refresh button and check to see that you are still online. If this fails, try using a search engine to find the site. It may have a new address. Network connection refused by the server Problem: The web server is busy. Solution: Try again in a while. Unable to locate host Problem: The web server is down or you39。s technical infrastructure, correlates a numerical address to a word. To access the White House website, you could type its number into the address box of your web browser. But most people prefer to use . In this case, the domain name is . In general, the threeletter domain name suffix is known as a generic toplevel domain and describes the type of organization. In the last few years, the lines have somewhat blurred between these categories. ?. business (mercial) 5 ?.edu educational ?.org nonprofit ?.mil military ?. work provider ?.gov government A domain name always has two or more parts separated by dots and typically consists of some form of an organization39。 the United Nations is . If a domain name is available, and provided it does not infringe on an existing trademark, anyone can register t