—Would you please tell me _______?

—OK, her name is Cici. [ ]

A. what was her name

B. What her name was

C. what is her name

D. What her name is

交换机或主机等为中央结点，其他计算机都与该中央结点相连接的网络拓扑结构是（） 。  

A、环型结构

B、总线结构

C、星型结构

D、树型结构