Router R1 sits inside OSPF area 1. Router R2 redistributes an E1 route into OSPF for prefi

y back to the rest of the EnterprisE.Which of the following is not a ben efit of using an IPsec tunnel for packets sent through the Internet, between R1 and the rest of the Enterprise？（）

A. Privacy

B. Authentication

C. Allows using an IGP between R1 and the Enterprise

D. Secure communications

o another Enterprise router for its two connectivity options back into the rest of the Enterprise network. The engineer planning for this branch decided to use the leased line for all Enterprise traffic, unless it fails, in which case the Internet connection should be used to pass traffic to the Enterprise.Which of the following is most likely to be useful on the branch router？（）

A. IPsec tunnel

B. GRE tunnel

C. Floating stati c route

D. An IGP

A. Router R1 will deny the 172.16.1.0/26 route while permitting the 172.16.1.64/27 route to be advertised.

B. Router R1 will advertise both rou tes.

C. Router R1 should be reconfigured with an ACL instead of an ip prefix - list command.

D. Router R1 will deny the 172.16.1.0/27 route while permitting the 172.16.1.0/26 route to be advertised.

xchanging 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

A.只允许192.168.4.2的数据流穿过R1

B.只允许192.168.4.2对R1进行TELNET

C.只允许192.168.4.2对R1进行TELNET 并拒绝其它流量

D.只允许192.168.4.0/24网段的数据流穿过R1

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.

某局域网通过两个路由器划分为三个子网，拓扑结构和地址分配如图1所示。

1．以下是路由器R1的部分配置命令列表：

Router＞en

Router＞conf term

Router (config) hostname R1

Router (config) int e0

R1 Router (config-if) (1)

R1 Router (config-if) no shutdown

R1 Router (config-if) (2)

R1 Router (config) ip routing

R1 Router (config) (3)

请为空缺处(1)、(2)、(3)添加合适的命令/参数，实现R1的正确配置。

2．以下是路由器R2的配置命令列表：

Router＞en

Routerconf term

Router (config) hostname R2

R2 (config) int e0

R2 (config-if) ip address 192.168.3.1 255.255.255.0

R2 (config-if) no shutdown

R2 (config-if) int s0

R2 (config-if) ip address l92.168.2.2 255.255.255.0

R2 (config-if) no shutdown

R2 (config-if) (4)

R2 (config) ip routing

R2 (config) ip route 0.0.0.00.0.0.0 (5)

R2 (config) ip classless

R2 (config) exit

R2copy run start

请为空缺处(4)、(5)添加合适的命令/参数，实现R2的正确配置。

r R1.Which answer can be verified as definitely true based on this output？（）External data:Originating router is 10.1.1.1AS number of route is 1External protocol is OSPF, external metric is 64Administrator tag is 0 (0x00000000)

A. R1 is the router that redistributed the route

B. R1‘s metric to reach subnet 10.2.2.0/24 is 64

C. The route was redistributed on a router that has a router ospf 1 command configured

D. R1 is redistributing a route to prefix 1 0.2.2.0/24 into OSPF

te 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？（）

A. R1 has been configured with an ip default- network 2.0.0.0 command.

B. R1 has been configured with an ip route 0.0.0.0 0.0.0.0 1.1.1.1 command.

C. R1 has been configured with an ip route 2.0.0.0 255.0.0.0 1.1.1.1 command.

D. Another router has been configured with an ip default - network 2.0.0.0 command.

E. Another router has been configured with an ip route 2.0.0.0 255.0.0.0 1.1.1.1 command.

A. Router R1 is waiting for a reply from the neighbor 10.1.2.1 to the hello message sent out inquiring for a second successor to network 10.6.1.0/24.

B. Router R1 can send traffic destined for network 10.6.1.0/24 out of interface FastEthernet0/0.

C. Router R1 is waiting for a reply from the neighb or 10.1.2.1 to the hello message sent out before it declares the neighbor unreachable.

D. Router R1 is waiting for a reply from the neighbor 10.1.2.1 in response to the query sent out about network 10.6.1.0/24.