问答题Refer to the output shown on switch SW1 below： VLAN 1 bridge priority set to 8192. VLAN 1 bridge max aging time set to 20.VLAN 1 bridge hello time set to 2. VLAN 1 bridge forward delay set to 15. Switch is now the root switch for active VLAN 1. What

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问答题

Refer to the output shown on switch SW1 below： VLAN 1 bridge priority set to 8192. VLAN 1 bridge max aging time set to 20.VLAN 1 bridge hello time set to 2. VLAN 1 bridge forward delay set to 15. Switch is now the root switch for active VLAN 1. What command would you enter to reproduce this output？

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第1题：

如果希望在Switch1中创建的VLAN信息也能在Switch2中使用，则分别在Switch1、Switch2上执行下列命令，请给出空白处的配置内容：

Switch1vlan database (设置VLAN配置子模式)

Switch1(vlan)vtp (4)

Switch1(vlan)vtp domain abc (设置域名)

Switch1(vlan)exit (退出VLAN配置模式)

Switch2vlan database (设置VLAN配置子模式)

Switch2(vlan)vtp (5)

Switch2(vlan)vtp domain abc (设置域名)

Switch2(vlan)exit (退出VLAN配置模式)

正确答案：(4)server (5)client
(4)server (5)client 解析：如果希望在Switch1中创建的VLAN信息也能在Switch2中使用，则需要创建VTP域，并将Switch1设置为server模式，把Switch2设置为client模式。

第2题：

Refer to the exhibit.If the devices produced the given output,what is the cause of the EtherChannel problem?()

A.There is a speed mismatch between SW1‘s Fa0/1 and SW2‘s Fa0/1 interfaces.

B.There is an MTU mismatch between SW1‘s Fa0/1 and SW2‘s Fa0/1 interfaces.

C.There is an encapsulation mismatch between SW1‘s Fa0/1 and SW2‘s Fa0/1 interface.

D.SW1‘s Fa0/1 interface is administratively shut down.

参考答案：A

第3题：

阅读下面配置信息，将(5)～(8)处空缺的内容填写在相应位置。

SW1＞enable (进入特权模式)

SW1 (5) (进入VLAN配置子模式)

SW1(vlan)vtp server (设置本交换机为Server模式)

SW1(vlan)vtp domain ABC (设置域名)

SW1(vlan) (6) (启动修剪功能)

SW1(vlan) (7) (设置VTP的版权为2)

SW1(vlan) (8) (创建VLAN2，并命名为v2)

SW1(vlan)……．． (创建VLAN3-VLAN6)

SW1(vlan)exit (退出VLAN配置模式)

SW1show vtp status (查看VTP设置信息)

正确答案：(5)vlan database (6)vtp pruning (7)vtp version 2 (8)vlan 2 name v2
(5)vlan database (6)vtp pruning (7)vtp version 2 (8)vlan 2 name v2 解析：进入VLAN配置子模式的命令是“vlan database”：启动VTP修剪功能的命令是“vtp pruning”；设置VTP的版权的命令是“vtp version<版本号designtimesp=31676>”；在VLAN配置子模式下创建VLAN的命令是“vlanname”。

第4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

参考答案：B, C, D

第5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

参考答案：C

第6题：

将交换机的access端口ethernet0/1加入VLAN4,可用如下方法配置（）。

A.[Switch]vlan 4[Switch-vlan4]port ethernet0/1

B.[Switch]vlan 4[Switch-Ethernet0/1]port access vlan 4

C.[Switch]vlan 4[Switch-vlan4]port accesse thernet0/1

D.[Switch]vlan 4[Switch-Ethernet0/1]port access vlan pvid 4[Huawei]vlan 3500[Huawei-Gigabit Ethernet0/0/1]disth interface Gigabit Ethernet0/0/1 port link-type access portdefault vlan 3500

正确答案：AB

第7题：

An administrator is unsuccessful in adding VLAN 50 to aswitch. While troubleshooting the problem, the administrator views the output of the show vtp status command, which is displayed in the graphic. What commands must be issued on this switch to add VLAN 50 to the database?（）

A. Switch(config-if)# switchport access vlan 50

B. Switch(vlan)# vtp server

C. Switch(config)# config-revision 20

D. Switch(config)# vlan 50 name Tech

E. Switch(vlan)# vlan 50

F. Switch(vlan)# switchport trunk vlan 50

参考答案：B, E

第8题：

阅读以下配置信息，解释(5)、(6)空缺处的命令的功能。

SW1 configt

SW1(config) interface f0/1 (进入接口1配置模式)

SW1(config-if)switchport mode trunk ((5))

SW1(config-if)switchpont runk allowed vlan all(设置允许从该接口交换数据的vlan)

SW1(config-if) end

SW1 vlan d

SW1(vlan) vlan 2 (创建一个vlan 2)

VLAN 2 added

Name：VLAN0002 (系统自动命名)

SW1(vlan) vlan 3 name vlan3 ((6))

VLAN 3 added：

Name：vlan3

SW1(vlan)exit

正确答案：
解析：这是一道要求读者掌握VLAN Trunk端口配置和VLAN创建命令的功能解释题。
在交换机某个接口配置子模式(SW1(config-if)#)中，命令“switchport mode trunk”用于设置当前端口为Trunk模式。
在交换机VLAN配置子模式(SW1(vlan)#)中，命令“vlan 3 name vlan3”用于创建一个VLAN3，并将其命名为vlan3。解答本试题时，(6)空缺处所填写的内容可从“SW1(vlan)# vlan 2(创建一个 vlan 2)”和“Name：VLAN0002(系统自动命名)”信息中得到启发。

第9题：

Refer to the exhibit A frame on vlan 1 on switch s1 is sent to switch s2 when the frame is received on vlan 2,what causes this behavior?()

A.trunk mode mismatches

B.vlans that do not correspond to a unique IP subnet

C.native vlan mismatches

D.allowing only vlan 2 on the destination.

参考答案：C

第10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.

参考答案：C

Refer to the output shown on switch SW1 below： VLAN 1 bridg

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