Refer to the topology shown in the exhibit. Which ports will be STP designated ports if all the links are operating at the same bandwidth?
  • 1、
【正确答案】 1、B,C,D    
【答案解析】B的mac最小为根桥 ,B的俩端口为指定端口. A的F0/0和C的F0/0为根端口。A的mac较小,A的F0/1为指定端口,C的F0/1堵塞