Router R1 exists in an Enterprise that uses EIGRP as its routing protocol. The show ip route command output on router R1 lists the following phrase: "Gateway of last resort is 1.1.1.1 to network 2.0.0.0". Whic h of the following is most likely to have caused this output to occur on R1?（）
第1题：
以下是路由器R1的部分配置，请完成其配置，或解释配置命令含义。
!
R1 (Config) interface fastethernet0
R1(Config-if) ip address (6) (7)
R1(Config-if) (8) (开启端口)
!
R1 (Config) interface serial 0
R1(Config-if) ip address (9) (10)
!
R1 (Config) ip routing
R1 (Config) router rip (11)
R1 (Config-router) (12) (声明网络)
R1 (Config-router) (13) (声明网络)
R1 (Config-router) (14) (声明网络)
R1 (Config-router) version 2 (15)
!
第2题：
A. The LSA was created by an ABR due to an area range command.
B. The LSA was created by an ASBR due to a summary - address command.
C. If cr eated by an area range command, the best metric for a subordinate subnet on that ABR must have been 11.
D. None of the other answers is correct.
第3题：
【问题2】（6 分）
根据网络拓扑和需求说明，完成路由器R1的配置。
R1(config)# interface Serial 1/0
R1(config-if)# ip address （3） 255.255.255.0 （设置串口地址）
R1(config-if)#no shutdown （开启串口）
R1(config)#interface FastEthernet0/0
R1(config-if)#ip address （4） 255.255.255.0 （设置以太口地址）
R1(config-if)#exit
R1(config)#router ospf 1
R1(config-router)#network 192.0.0.1 （5） area 0
R1(config-router)#network 192.1.1.1 （6） area 0
第4题：
Refer to the exhibit. All routers have Protocol Independent Multicast (PIM) enabled interfaces. On the basis of the configuration provided on routers R1 and R2, which router will take on the func tion of rendezvous point (RP) for the multicast network? （）
A. both routers R1 and R2
B. router R1
C. router R2
D. none of the routers since they are not configured with static RP
第5题：
Refer to the exhibit. OSPF has been configured on all routers in the network. However, router R1 does not receive a default route to router R2 as in tended. Which configuration change would ensure that R1 would receive a default route from R2? （）
A. Add the area 1 stub command on routers R1.
B. Add the always keyword to the default - information originate configuration command on router R2.
C. Remov e the default information originate configuration command from router R2 and place it on router R1.
D. Add the ip route 5.0.0.0 255.255.255.0 0.0.0.0 command to router R2.
第6题：
阅读以下关于RIP动态路由配置的技术说明，结合网络拓扑图回答问题1至问题3。
[说明]
某大学城局域网的网络拓扑结构如图7-18所示，图中路由器R1、R2，R3均运行基于距离矢量算法的RIP路由协议，并且图中给出了路由器R1、R2、R3各端口的IP地址信息。
结合图7-18所示的网络拓扑结构图，将以下路由器R1配置信息中(1)～(9)空缺处的内容填写完整，实现路由器R1的正确配置。
Router>en (进入特权模式)
Router config terminal (进入配置模式)
Router (config) (1)
R1 (config) no logging console
R1 (config) interface fastethernet0/1
R1 (config-if) ip addtess 192.168.100.1 155.255.255.0
R1 (config-if) (2)
(3)
R1 (config) interface sellal 0 (进入端口S0配置子模式)
R1 (config-if) (4) (设置当前端口IP地址)
R1 (config-if) no shutdown
R1 (config-if) (5)
R1 (eonfig-if) ip address 192.168.65.2 255.255.255.0
R1 (config-if) no shutdown
R1 (config-if) exit (退出当前端口配置子模式)
R1 (config) (6)
R1 (config) (7)
R1 (config-router) (8)
R1 (conhg-router) network 192.168.65.0
R1 (config-router) network 192.168.67.0
R1 (config-router) end (退出回到特权模式)
R1 (9) (将配置信息保存到非易失性RAM中)
第7题：
Refer to the exhibit. Routers R1 and R2 have established a neighbor relationship and are exchanging routing information. The network design requires that R1 r eceive routing updates from R2, but not advertise any routes to R2. Which configuration command sequence will successfully accomplish this task? （）
A. R1(config)# router eigrp 1 R1(config - router)# passive - interface serial 0
B. R1(config)# access - list 2 0 deny any R1(config)# router eigrp 1 R1(config - router)# distribute - list 20 out serial 0
C. R2(config)# access - list 20 permit any R2(config)# router eigrp 1 R2(config - router)# distribute - list 20 in serial 0
D. R1(config)# access - list 20 permit any R 1(config)# router eigrp 1 R1(config - router)# distribute - list 20 in serial 0
E. R2(config)# access - list 20 deny any R2(config)# router eigrp 1 R2(config - router)# distribute - list 20 out serial 0
F. R2(config)# router eigrp 1 R2(config - router)# passive - interface serial 0
第8题：
在[问题1]和[问题2]中，所使用的是静态路由协议。当该公司有多个分支机构，决定使用动态路由协议OSPF。下面是分支机构路由器R1的配置命令列表，在空白处填写合适的命令/参数，实现R1的正确配置。(注：点对点链路的area为2，分支机构局域网的area为3)。
R1＞en
R1conf term
R1(config)no ip route
R1(config)router [ (6) ]
R1(config-router)network[ (7) ]area 2
R1(config-router)network[ (8) ]area 3
R1(confiq-router)exit
R1copy run start
第9题：
A. The i su 10.1.0.0/23 route is a suppressed route.
B. The i su 10.1. 0.0/23 route is a summary route.
C. The i su 10.1.0.0/23 route is an IS - IS external route.
D. The R1 IS - IS router is an ASBR.
E. The R1 IS - IS router is an ABR that belongs to multiple IS - IS areas.
F. The R1 IS - IS router is performing route aggregation and is suppressing the more specific 10.1.0.0/23 prefix.
第10题：
A. Router R2 will be preferred because it has the higher neighbor IP address.
B. Router R2 will be preferr ed because its neighbor has a lower autonomous system number.
C. Router R1 will be preferred because it has a lower local preference.
D. Router R2 will be preferred because it has a higher local preference.
E. Router R1 will be preferred because its nei ghbor has the higher autonomous system number.
F. Router R1 will be preferred because it has the lower neighbor IP address.