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Garanţii în Sistemul Calităţii

August 7, 2009 Written by nicolae


Laboratorul de calculatoare

Motivaţie

Anumite aplicaţii necesită un nivel minim al performanţei reţelei:

  • telefonia Internet, teleconferinţa, întârzieri > 500ms în cazul interacţiei cu imperfecţiunile umane
  • sesiunea este garantată SC sau este blocată (este negată admisia în reţea)

Nepotriviri fundamentale între SC şi comutarea de pachete:

  • comutarea pachetelor: resurse partajate statistic în speranţa că cererile de vârf a sesiunii nu coincid
    • este necesară o certitudine de 100% luând în calcul cazul cel mai rău posibil
  • admisia/negarea sesiunii în cazul cel mai rău este echivalent cu comutarea de circuite!
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