The protocol indicates what method a Web browser (or other type of Inteet software) should use to exchange data with the file server on which the desired document resides. The protocols recognized by most browsers are hypertext transfer protocol (http), hypertext transfer protocol secure (https), and file transfer protocol (ftp); other Inteet protocols include telnet and gopher. In a URL, all of the protocols listed in this paragraph should be followed by a colon and two forward slashes (e.g., http ://).
The host name identifies the server on which the files reside. On the Web, it is often the address for an organization's home page (e.g., http://www.apa.org is the address for APA's home page). Although most host names start with "www," not all do (for example, http://jouals.apa.org is the home page for APA's electronic jouals, and http://members.apa.org is the entry page to the members-only portion of the APA site). The host name is not case sensitive; for consistency and ease of reading, always type it in lowercase letters.
The rest of the address indicates the directory path leading to the desired document. This part of the URL is case sensitive; faithfully reproduce upp سلامت در کاربرد فناوری...
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