局域网的拓扑结构 星型(Star) ■ 环型(Ring) 总线型(Bus) Central 树型(Tree) server Ring network Network backbone Concentrator tor hub) Bus network 99 局域网的拓扑结构 ◼ 星型(Star) ◼ 环型(Ring) ◼ 总线型(Bus) ◼ 树型(Tree) Ring network Bus network Central server Concentrator (or hub) Network backbone