15 Minute Series What is a URL?


Each Internet application (ftp, telnet, http, etc.) is associated with a unique port number. For example, the port number associated with web resources is 80 by default.

Occasionally, a web resource is accessed through a different port number. In these instances, the port number needs to be specified. For example:

http://www.company.com:7070/file.html

If a port number is not specified in a URL, it is assumed to be 80 and does not need to be specified. For example:

http://www.school.edu/file.html



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