多项选择题

Refer to the topology shown in the exhibit. Which ports will be STP designated ports if all the links are operating at the same bandwidth? ()

A.Switch A - Fa0/0
B.Switch A - Fa0/1
C.Switch B - Fa0/0
D.Switch B - Fa0/1
E.Switch C - Fa0/0
F.Switch C - Fa0/1


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1.单项选择题Which statement about vlan operation on cisco catalyst switches is true?()

A.when a packet is received from an 802.1Q trunk,the vlan id can be determined from the source MAC address table.
B.unkown unicast frames are retransmitted only to the ports that belong to the same vlan
C.ports between switches should be configured in access mode so that vlans can span across the ports
D.broadcast and multicast frames are retransmitted to ports that are configured on different vlan.

2.单项选择题assuming the default switch configuration which vlan range can be added modified and removed on a cisco switch?()

A.2 through 1001
B.1 through 1001
C.1 through 1002
D.2 through 1005

4.单项选择题

Refer to the exhibit. Why has this switch not been elected the root bridge for VLAN1?()

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.

5.单项选择题Why will a switch never learn a broadcast address?()

A.Broadcast frames are never sent to swiches.
B.Broadcast addresses use an incorrect format for the switching table.
C.A broadcast address will never be the source address of a frame.
D.Broadcasts only use network layer addressing.
E.A broadcast frame is never forwarded by a switch.

6.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.

7.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

8.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.

9.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

10.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