Why will a switch never learn a broadcast address?（）

单项选择题Refer to the exhibit. Given the output shown from this Cisco Catalyst 2950, what is the most likely reason that interface FastEthernet 0 10 is not the root port for VLAN 2?（）

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.

单项选择题Refer to the exhibit.All switch ports are assigned to the correct VLANs, but none of the hosts connected to SwitchA can communicate with hosts in the same VLAN connected to SwitchB. Based on the output shown, what is the most likely problem?（）

A.The access link needs to be configured in multiple VLANs.
B.The link between the switches is configured in the wrong VLAN.
C.The link between the switches needs to be configured as a trunk.
D.VTP is not configured to carry VLAN information between the switches.
E.Switch IP addresses must be configured in order for traffic to be forwarded between the switches

多项选择题Which of the following statements describe the network shown in the graphic? （）

A.There are two broadcast domains in the network.
B.There are four broadcast domains in the network.
C.There are six broadcast domains in the network.
D.There are four collision domains in the network.
E.There are five collision domains in the network.
F.There are seven collision domains in the network.

单项选择题Which command enables RSTP on a switch?（）

A.spanning-tree mode rapid-pvst
B.spanning-tree uplinkfast
C.spanning-tree backbonefast
D.spanning-tree mode mst

多项选择题Which two commands can be used to verify a trunk link configuration status on a given cisco switch?（）

A.show interfaces interface
B.show interfaces trunk
C.show interfaces switchport
D.show ip interface brief
E.show interfaces vlan