不定项选择题 2.  Which network topology is in use when one central site is considered a hub and all other sites connect directly to the hub site? Most user traffic flows between their respective spoke networks and the hub, but when necessary, two spoke sites can communicate by the hub network acting as a relay between the spoke networks. 拓扑结构判断：中央站点是网络的核心，所有分支站点均与中央站点相连。大部分用户流量在分支站点和中央站点之间传输，两个分支站点在必要时也可以通过中央站点相互通信。