Network hardware, software and specifications, as well as the expertise of network management personnel are important in ensuring that data follows the most efficient route, and upstream connections work reliably. A tradeoff between cost and efficiency is possible.[citation needed] COUNT 2
QSN1 Is a tradeoff between efficiency and cost possible?  ANS1 A tradeoff between cost and efficiency is possible QSN2 What sort of route does data follow?  ANS2 the most efficient route