Question about Computers & Internet
http://www.mairie-metz.fr:8080/ In this example, the number 8080 refers to the port number used by the Web browser to connect to the Web server. Normally, a Web site uses port number 80 and this number need not be included with the URL (although it can be). In IP networking, port numbers can theoretically range from 0 to 65535. Most popular network applications, though, use port numbers at the low end of the range (such as 80 for HTTP). The port number is included as a field within the header of each IP packet. Note: The term port also refers to several other aspects of network technology. A port can refer to a physical connection point for peripheral devices such as serial, parallel, and USB ports. The term port also refers to certain Ethernet connection points, such as those on a hub, switch, or router.
2.The protocol number is used to identify the machine and a port number to identify particular applications running on that machine and To allow applications to communicate with each other, either on the same machine (using loopback) or across different hosts, each application must be individually addressable
Posted on May 19, 2008
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Posted on Jan 02, 2017
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