单项选择题 Refer to the exhibit.HostA cannot ping HostB.Assuming routing is properly configured,what could be the cause of this problem?（）

单项选择题 Refer to the exhibit。A problem with network connectivity has been observed.It is suspected that the cable connected to switch port Fa0/9 on Switch 1 disconnected.What would be an effect of tis cable being disconnected?（）

多项选择题 Refer to the exhibit. The network shown in the diagram is experiencing connectivity problems. Which of the following will correct the problems? （）