题目详情

阅读以下说明,回答问题 1至问题 3. 将解答填入答题纸对应的解答栏内。【说明 】某局域网的拓扑结构如图 3-1 所示。其中switchA ge

0/0/2与路由器相连。

初级网络管理员,章节练习,网络组件技术与综合布线

网络的主要配置如下,请解释配置命令。//(1)[SwitchB] vlan batch 10 20[SwitchB] interface GigabitEthernet 0/0/1[SwitchB-GigabitEthernet0/0/1] port link-type access[SwitchB-GigabitEthernet0/0/1] port default vlan 10[SwitchB] interface GigabitEthernet 0/0/2[SwitchB-GigabitEthernet0/0/2] port link-type access[SwitchB-GigabitEthernet0/0/2] port default vlan 20[SwitchB] interface GigabitEthernet 0/0/23[SwitchB-GigabitEthernet0/0/23] port link-type trunk[SwitchB-GigabitEthernet0/0/23] port trunk allow-pass vlan 10 20//(2)[SwitchA] vlan batch 10 20 30 100[SwitchA] interface GigabitEthernet 0/0/23[SwitchA-GigabitEthernet0/0/23] port link-type trunk[SwitchA-GigabitEthernet0/0/23] port trunk allow-pass vlan 10 20//(3)[SwitchA] interface GigabitEthernet 0/0/24[SwitchA-GigabitEthernet0/0/24] port link-type access[SwitchA-GigabitEthernet0/0/24] port default vlan 30//配置连接路由器的接口模式,该接口属于VLAN100[SwitchA] interface GigabitEthernet 0/0/2[SwitchA-GigabitEthernet0/0/2] port link-type access[SwitchA-GigabitEthernet0/0/2] port default vlan 100//配置内网网关和连接路由器的地址[SwitchA] interface Vlanif 10[SwitchA-Vlanif10] ip address 192.168.10.1 24[SwitchA] interface Vlanif 20[SwitchA-Vlanif20] ip address 192.168.20.1 24[SwitchA] interface Vlanif 30[SwitchA-Vlanif30] ip address 192.168.30.1 24[SwitchA] interface Vlanif 100[SwitchA-Vlanif100] ip address 172.16.1.1 24//(4)[SwitchA] ip route-static 0.0.0.0 0.0.0.0 172.16.1.2//(5)[AR2200] interface GigabitEthernet 0/0/0[AR2200-GigabitEthernet 0/0/0] ip address 59.74.130.2 30[AR2200] interface GigabitEthernet 0/0/1[AR2200-GigabitEthernet 0/0/1] ip address 172.16.1.2 24//(6)[AR2200] acl 2000[AR2200-acl-basic-2000] rule permit source 192.168.10.0 0.0.0.255[AR2200-acl-basic-2000] rule permit source 192.168.20.0 0.0.0.255[AR2200-acl-basic-2000] rule permit source 192.168.30.0 0.0.0.255[AR2200-acl-basic-2000] rule permit source 172.16.1.0 0.0.0.255//(7)[AR2200] interface GigabitEthernet 0/0/0[AR2200-GigabitEthernet 0/0/0] nat outbound 2000//(8)[AR2200] ip route-static 192.168.10.255.255.255.0 172.16.1.1[AR2200] ip route-static 192.168.20.255.255.255.0 172.16.1.1[AR2200] ip route-static 192.168.30.255.255.255.0 172.16.1.1[AR2200] ip route-static 0.0.0.0 0.0.0.0 59.74.130.1(1)~(8)备选答案:A.在SwitchC上配置接口模式,该接口属于VLAN 30B.配置指向路由器的静态路由C.在SwitchA上创建VLAN,配置接口模式并放行VLAN 10 和VLAN 20D.配置到内网的静态路由和到外网的静态路由E.配置路由器内部和外部接口的IP地址F.配置ACL策略G.外网接口配置NAT转换H.在SwitchB上创建VLAN,并配置接口模式【问题2 】(6 分)图3-2是PC4的网络属性配置界面,根据以上配置填空。IP地址:(9)子网掩码:(10)默认网关:(11)

初级网络管理员,章节练习,网络组件技术与综合布线

【问题3】(6分)//为了限制VLAN 10中的用户的访问,在网络中增加了如下配置。[SwitchA] time-range t 8:00 to 18:00 daily[SwitchA] acl number 3002[SwitchA-acl-adv-3002] rule 5 deny ip source 192.168.10.0 0.0.0.255Destination 192.168.30.0 0time-range t[SwitchA] traffic classifier tc 1[SwitchA-classifier-tc 1] if-match acl 3002[SwitchA]traffic behavior tb 1[SwitchA-behavior-tb 1] deny[SwitchA] traffic policy tp 1[SwitchA-trafficpolicy-tp 1]classifier tcl behavior tb 1[SwitchA] interface GigabitEthernet0/0/23[SwitchA-GigabitEthernet0/0/23] traffic-policy tp 1 inbound1.以上配置实现了VLAN 10的用户在(12)时间段可以访问VLAN(13)中的主机。2.ACL 3002中的编号表示该ACL的类型是(14)。

正确答案及解析

正确答案
解析

【问题1】(1)H(2)C (3)A (4) B (5)E (6)F (7)G (8)D【问题2】(9)192.168.30.2-192.168.30.254中的任意一个 (10) 255.255.255.0 (11)192.168.30.1 【问题3】(12)每日的18:00到第二天的8:00 (13) vlan30 (14)高级访问控制列表

【解析】

【问题1】(1)根据下面的配置代码可以看到,是在switchb上进行配置,这部分是设置两个vlan接口,对应相应的接口,因此应该选 H。(2)设置了的链路trunk接口用于vlan10 和vlan 20通行。因此应该选C。(3)为switchC上的vlan30数据设置access接口,允许数据转发到SwitchA上来。(4)ip route-static 0.0.0.0 0.0.0.0 172.16.1.2 这个命令式设置默认静态路由的基本命令。(5)从"ip address 59.74.130.2 30" 可知,这是为接口配置IP地址。(6)从 acl 2000 可以知道,是配置访问控制列表。(7)nat outbound 是在出接口配置nat (8)配置各种静态路由,包括之前的指向内网的三条和指向外网的一条默认静态路由。【问题2】PC4从拓扑图上可以看到对应的位置switchc 的g0/0/2上。对应上联的交换机是SwitchA的g0/0/24接口。从配置来看是,该接口是access 默认vlan 是vlan30.从[SwitchA-Vlanif30] ip address 192.168.30.1 24 可以得到,vlan的IP网段是192.168.30.0/24,因此pc4只能是该网段的IP地址。只要是本网段中不和网关地址192.168.30.1冲突的主机地址都可以。子网掩码就是255.255.255.0.【问题3】(12)根据time-range t 8:00 to 18:00 daily 可知,每天的8:00-18:00这个时间范围是有效时间范围。而rule 5 deny ip source 192.168.10.0 0.0.0.255 Destination 192.168.30.0 0 time-range t 则表明这个时间范围内,不允许192.168.10.0 所在的vlan 10 访问192.168.30.0 对应的vlan 30.因此允许vlan10 访问vlan30的时间范围就是每日的18:00到第二天的8:00。(14)概念题。如下表所示。

初级网络管理员,章节练习,网络组件技术与综合布线

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