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Network packet
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== Architecture == The basis of the packet concept is the postal letter: the header is like the envelope, the payload is the entire content inside the envelope, and the footer would be your signature at the bottom.<ref>{{citation |url=http://www.tcpipguide.com/free/t_UnderstandingTheOSIReferenceModelAnAnalogy.htm |title=Understanding The OSI Reference Model: An Analogy |work=The TCP/IP Guide |access-date=2014-08-09 |url-status=live |archive-url=https://web.archive.org/web/20140809215056/http://www.tcpipguide.com/free/t_UnderstandingTheOSIReferenceModelAnAnalogy.htm |archive-date=2014-08-09 }}</ref> [[Network design]] can achieve two major results by using packets: ''error detection'' and ''multiple host addressing''.<ref>{{Cite web|title=Chapter 5 Link Layer|url=http://www.msc.uky.edu/ken/cs471/notes/chap5.htm|access-date=2021-10-23|website=www.msc.uky.edu}}</ref>
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