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l18_march26 - Lecture 18 Synthetic criteria for evaluation...

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1 Lecture 18 – March 26, 2002 Synthetic criteria for evaluation of network traffic patterns. Open systems.
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2 Open Systems Open systems…… Service overlay model services are introduced at the edge of the virtual infrastructure supported by the Internet. The active network model programmable network infrastructure. Active media model media carries along the code necessary to transform the data.
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3 T e le c o n fe r e n c in g T e le m e d ic in e E le c tr o n ic M a il R e m o te L o g in F in a n c ia l L a y e r 4 - A p p l i c a t i o n s L a y e r 3 - M i d d l e w a r e S e r v i c e s A u th e n tic a tio n C o o r d in a tio n S to r a g e L a y e r 2 - T r a n s p o r t S e r v i c e s L a y e r 1 - N e t w o r k S e r v i c e s T e x t L a y e r 0 - T e c h n o l o g y S u b s t r a t e L A N s W ir e le s s D ir e c t B r o a d c a s t S a te liite V id e o A T M D ia l- u p M o d e m s V id e o c o n fe r e n c in g V id e o & A u d io S e r v ic e s W e b S e r v ic e s A u d io
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