题目详情

某公司网络拓扑结构如图4-1所示。公司内部使用C类私有IP地址,其中公司两个部门分别处于VLAN10和VLAN20,VLAN10采用192.168.10.0/24网段,VLAN20采用192.168.20.0/24网段,每段最后一个地址作为网关地址。

中级网络工程师,历年真题,2014年下半年(下午)《网络工程师》案例分析真题

图4-1

【问题1】(10分)

公司使用VTP协议规划VLAN,三层交换机S1为VTP?Server,其他交换机为VTPClient,并通过SI实现VLAN间通信。请根据网络拓扑和需求说明,完成交换机S1和S2的配置。

S1>enable

S1#configure?terminal

S1(config)#vtp?mode(1)

S1(config)#vtp?domain?shx

S1(config)#vtp?password?shx

S1(config)#vlan?10

S1(config-vlan)#exit

S1(config)#vlan?20

S1(config-vlan)#exit

S1(config)#interface?vlan?10

S1(config-if)#ip?address(2)(3)

S1(config-vlan)#exit

S1(config)#interface?vlan?20

S1(config-if)#ip?address?192.168.20.254?255.255.255.0

S1(config-if)#exit

S1(config)#interface(4)fastethernet?0/22-23

S1(config-if-range)#switchport?mode?access

S1(config-if-range)#switchport?mode(5)

S1(config-if-range)#exit

S1(config)#interface?fastEthernet?0/1

S1(config-if)#(6)//关闭二层功能

S1(config-if)#ip?add?192.168.40.254?255.255.255.0

S1(config-if)#exit

S1(config)#(7)(8)//开启路由功能

S1(corffig)#

S2>enable

S2#configurc?terminal

S2(config)#vtp?mode(9)

S2(config)#vtp?domain?shx

S2(config)#vtp?password?shx

S2(config)#intererce?fastethernet?0/24

S2(config-if)#switchport?mode(10)//设定接口模式

S2(config-if)#end

S2#

【问题2】(5分)

公司申请了202.165.200.0/29地址段,使用NAT-PT为用户提供Internet访问,外部全局地址为202.165.200.1,Web服务器使用的外部映射地址为202.165.200.3。请根据网络拓扑和需求说明,完成路由器Rl的配置。

R1>enable

R1#config?terminal

R1(config)#access-Iist?1(11)192.168.10.0?255.255.255.0

R1(config)#interface?serial?0/0/0

R1(config-if)#ip?address?202.165.200.1?255.255.255.248

R1(config-if)#no?shutdown

R1(config-if)#clock?rate?4000000

R1(config-if)#interface?fastethernet?0/0

R1(config-if)#ip?address?192.168.50.254?255.255.255.0

R1(config-if)#no?shutdown

R1(config-if)#exit

R1(config)#ip?nat?inside?source(12)1?interface?s0/0/0?0verload

…..

R1(config)#ip?nat?inside?source?static(13)202.165.200.3

R1(config)#intcrface?fastethernet?0/0

R1(config-if)#ip?nat(14)

R1(config-if)#interface?serial?0/0/0

R1(config-if)#ip?nat(15)

R1(config-if)#end

R1#

正确答案及解析

正确答案
解析

【问题1】(10分)

(1)Server

(2)192.168.10.254

(3)255.255.255.0

(4)range

(5)Trunk

(6)no switchport

(7)IP

(8)Routing

(9)Client

(10)Trunk

【问题2】(5分)

(11)Permit

(12)list

(13)192.168.40.1

(14)inside

(15)outside

【问题1】(10分)

本题考察交换机的相关配置。

S1>enable

S1#configure terminal

S1(config)vtp mode server

S1(config)#vtp domain shx

S1(config)#vtp password shx

S1(config)#vlan 10

S1(config-vlar)#exit

S1(config)#vlan 20

S1(config-vku)#exit

S1(config)#interface vlan l0

S1(config-if)#ip address 192.168.10.254 255.255.255.0

S1(config-vlar)#exit

S1(config)#interface vlan 20

S1(config-if)#ip address 192.168.20.254 255.255-255.0

S1(config-if)#exit

S1(config)#interface range fastethernet 0/22-23

S1(config-if-range)#switchport mode access

S1(config-if-range)#switchport mode trunk

S1(config-if-range)#exit

S1(config)#interface fastEthernet 0/1

S1(config-if)#no switchport//关闭二层功能

S1(config-if)#ip add 192.168.40.254 255.255.255.0

S1(config-if)#exit

S1(config)#ip routing//开启路由功能

S1(corffig)#

S2>enable

S2#configurc terminal

S2(config)#vtp mode client

S2(config)#vtp domain shx

S2(config)#vtp password shx

S2(config)#intererce fastethernet 0/24

S2(config-if)#switchport mode trunk//设定接口模式

S2(config-if)#end

S2#

【问题2】(5分)

R1>enable

R1#config terminal

R1(config)#access-Iist l permit 192.168.10.0 255.255.255.0

R1(config)#interface serial 0/0/0

R1(config-if)#ip address 202.165.200.1 255.255.255.248

R1(config-if)#no shutdown

R1(config-if)#clock rate 4000000

R1(config-if)#interface fastethernet 0/0

R1(config-if)#ip address 192.168.50.254 255.255.255.0

R1(config-if)#no shutdown

R1(config-if)#exit

R1(config)#ip nat inside source list 1 interface s0/0/0 0verload

…..

R1(config)#ip nat inside source static 192.168.40.1 202.165.200.3

R1(config)#intcrface fastethernet 0/0

R1(config-if)#ip nat inside

R1(config-if)#interface serial 0/0/0

R1(config-if)#ip nat outside

R1(config-if)#end

R1#

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