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...Objectives describe the osi and ieee networking models summarize standards guide to essentials th edition cengage learning introducing open systems interconnection reference model proposed by international organization for standardization iso provides a common framework developers students of work with learn from is not specific any protocol suite can be applied most protocols seven layer how data travels place on given network role see value layered outside field look at an example letter being created sent delivered us postal service has written placed in envelope addressed correct format local post office destination town sort correctly right part carrier deliver house recipient receive it read approach complicated process reduces its complexity turns into series interconnected tasks each task previous handled separately without affecting procedures other step where delivers let s say he currently walks his route which takes considerable amount time gets upgrade delivery truck so th...