A.It has more than one interface that is connected to the root network segment.
B.It is running RSTP while the elected root bridge is running 802.1d spanning tree.
C.It has a higher MAC address than the elected root bridge.
D.It has a higher bridge ID than the elected root bridge.
第1题：
A.The Fa0/11 role confirms that SwitchA is the root bridge for VLAN 20.
B.VLAN 20 is running the Per VLAN Spanning Tree Protocol.
C.The MAC address of the root bridge is 0017.596d.1580.
D.SwitchA is not the root bridge, because not all of the interface roles are designated.
第2题：
A.Switch A ,because it has the lowest MAC address
B.Switch C,because it has the lowest priority
C.Switch B,because it has the highest MAC address
D.Switch C,because it is the most centrally located switch
E.Switch A,because it is the most centrally located switch
F.Switch D,because it has the highest priority
第3题：
Refer to the exhibit. Switch port FastEthernet 0/24 on AlSwitch1 will be used to create an IEEE 802.1Q- complaint trunk to another switch. Based on the output shown, What is the reason the trunk does not form, even thought the proper cabling has been attached?（）
A.VLANs have not been created yet
B.An IP address must be configured for the port
C.The port is currently configured for access mode
D.The correct encapsulation type has not been configured
E.The no shutdown command has not been entered for the port
第4题：
Refer to the exhibit. The output that is shown is generated at a switch. Which three of these statements are true? （）
第5题：
The network administrator has enabled BPDU guard on the LAN. Why is an effective way to prevent an unauthorized rogue switch from altering the spanning-tree topology of this network？ （）
第6题：
A.This switch has more than one interface connected to the root network segment in VLAN 2.
B.This switch is running RSTP while the elected designated switch is running 802.1d Spanning Tree.
C.This switch interface has a higher path cost to the root bridge than another in the topology.
D.This switch has a lower bridge ID for VLAN 2 than the elected designated switch.
第7题：
A.Switch3
B.Switch4
C.Switch2
D.Switch1
第8题：
A.As FastEthernet0/12 will be the last to come up, it will not be blocked by STP.
B.Remote access management of this switch will not be possible without configuration change.
C.More VLANs will need to be created for this switch.
D.The switch will need a different IOS code in order to support VLANs and STP.
第9题：
Refer to Topic TestKing.com in iPAD document.Which switch is the root bridge for VLAN 1?（）
第10题：
Refer to the exibit. Three cisco 2950 switches are set to their default priority sttings.During the spanningtree process,which switch will be elected as the root bridge?（）