Instructions: In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
Input: What factor in data flow would ultimately be the decision maker for how to balance cost and efficiency?, Context: 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]
Output:
network management personnel