Let's look at some of the protocols (standards for transmission) on the Internet which are supported on the Web and can be accessed using URLs. HTTP is currently the most commonly used protocol, but you may see the following as well. Protocols and Domains
HyperText Transfer Protocol http:// Protocol used to transfer hypertext documents on the Web File Transfer Protocol ftp:// Protocol for transferring files from one computer to another computer Telnet telnet:// Protocol which allows user to login to another remote computer system Gopher gopher:// Protocol which identifies a file on a gopher server Newsgroup news:// Protocol for posting from Usenet newsgroup
Foreign countries and a few computer sites in the United States choose to identify themselves by their geographic locations, as opposed to identifying themselves as a business, organization or educational institution.For example:
us United States uk United Kingdom ca Canada jp Japan es Spain fr France ny New York Domain names for the Internet, then, can be: com, edu, net, mil, gov, org, and the 2-letter abbreviation code for countries and states.
www.oxford.ac.uk
This URL translates into a World Wide Web site (www), at an institution identified as Oxford (Oxford University), an academic institution (ac), in the United Kingdom (uk).