Creating a network app Freor ication data link write programs that run on ( differentend systems communicate over network e.g. web server software communicates with browser software applicati No need to write software transport network data link for network-core devices Network-core devices do link physIcal not run user applications applications on end systems aeWs for rapid app development, propagation uct by Weiteng Sun chapter 2-application layer 5/73Introduct by Weifeng Sun chapter2- application layer 5/73 Creating a network app write programs that – run on (different) end systems – communicate over network – e.g., web server software communicates with browser software No need to write software for network-core devices – Network-core devices do not run user applications – applications on end systems allows for rapid app development, propagation application transport network data link physical application transport network data link physical application transport network data link physical