单项选择题
Based on the network shown in the graphic which option contains the potential networking problem and protocol or setting that can to prevent the problem?（）
A.Routing loops, hold down timers B.Switching loops, split horizon C.Routing loops, split horizon D.Switching loops, VTP E.Routing loops, STP F.Switching loops, STP
单项选择题 Which command can be used from a PC to verify the connectivity between hosts that connect through a switch in the same LAN?（）
多项选择题 Which two benefits are provided by creating VLANs? （）
单项选择题 Refer to the exhibit. Which statement is true?（）
