Server Types Different servers do different jobs, from serving e-mail and video to protecting internal networks and hosting Web sites. Learn about the many types of servers used today. Chart puts into perspective line speeds used in Internet backbones, LANs, and WANs. Check this page for every data format and its corresponding file extension. Special characters require special coding.
Different countries use different suffixes, usually two letters.
If you encounter a Web site with a unique two-letter domain extension, look here for its country equivalent. Of course you have. It's usually the other guys fault. Here are some of the more common errors you'll see on the Internet. Although we think of the Internet as a new entity, its origins date back over 40 years.