单项选择题
A. Lower the bridge priority number.
B. Change the MAC address of the switch.
C. Increase the VTP revision number for the domain.
D. Lower the root path cost on the switch ports.
E. Assign the switch an IP address with the lowest value.
单项选择题 Which command shows if an access list is assigned to an interface?（）
单项选择题 A wireless client cannot connect to an 802.11b/g BSS with a b/g wireless card. The client section of the access point does not list any active WLAN clients. What is a possible reason for this?（）
单项选择题 What occurs on a Frame Relay network when the CIR is exceeded?（）