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【单选题】

Router R1 sits inside OSPF area 1. Router R2 redistributes an E1 route into OSPF for prefix 2.2.2.0/24, with external metric 20. Router R22 redistributes an E2 route for the same prefix/length, external metric 10.<br /> Under what conditions will R1 choose as it s best route the route through R22?（）

A、R1 will always choose the route through R22.

B、As long as R1's best internal OSPF cost to reach R22 is less than 10.

C、As long as R1's best internal OSPF cost to reach R22 is less than 20.

D、R1 will never choo se the route through R22 if the E1 route through R2 is available.

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更多“ Router R1 sits inside OSPF area 1. Router R2 redistributes an E1 route into OSPF for prefix 2.2.2.0/24, with external metric 20. Router R22 redistributes an E2 route for the same prefix/length, external metric 10.<br /> Under what conditions will R1 choose as it s best route the route through R22?（）”相关的问题
第1题
[] Router R1 sits at an Enterprise branch office, using the Internet for its only connectivity 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?（） Router R1 sits at an Enterprise branch office, using the Internet for its only connectivity 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、A. Privacy  B、B. Authentication  C、C. Allows using an IGP between R1 and the Enterprise  D、D. Secure communications  

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第2题
[单选题] 正确地为路由器命名为R1的命令是（）。

A、hostname R1  B、name R1  C、router name R1  D、name router R1  

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第3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? （） 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、A. R1(config)# router eigrp 1 R1(config - router)# passive - interface serial 0  B、B. R1(config)# access - list 2 0 deny any R1(config)# router eigrp 1 R1(config - router)# distribute - list 20 out serial 0  C、C. R2(config)# access - list 20 permit any R2(config)# router eigrp 1 R2(config - router)# distribute - list 20 in serial 0  D、D. R1(config)# access - list 20 permit any R 1(config)# router eigrp 1 R1(config - router)# distribute - list 20 in serial 0  E、E. R2(config)# access - list 20 deny any R2(config)# router eigrp 1 R2(config - router)# distribute - list 20 out serial 0  F、F. R2(config)# router eigrp 1 R2(config - router)# passive - interface serial 0  

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第4题
[多选题] Which series of commands will configure router R1 for LAN-to-LAN communication with router R2？ The enterprise network address is 192.1.1.0/24 and the routing protocol in use is RIP.（）

A、R1（config）# interface ethernet 0；R1（config-if）# ip address 192.1.1.129 255.255.255.192；R1（config-if）# no shutdown  B、R1（config）# interface ethernet 0；R1（config-if）# ip address 192.1.1.97 255.255.255.192；R1（config-if）# no shutdown  C、R1（config）# interface serial 0；R1（config-if）# ip address 192.1.1.4 255.255.255.252；R1（config-if）# clock rate 56000  D、R1（config）# interface serial 0；R1（config-if）# ip address 192.1.1.6 255.255.255.252；R1（config-if）# no shutdown  E、R1（config）# router rip；R1（config-router）# network 192.1.1.4；R1（config-router）# network 192.1.1.128  F、R1（config）# router rip；R1（config-router）# version 2；R1（config-router）# network 192.1.1.0  

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第5题
[单选题] Refer to the exhibit. Router R1 is connected to networks 172.1 6.1.0 /26 and 172.16.1.64 /27. On the basis of the partial output in the exhibit, which statement is true? （）

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.  

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第6题
[单选题] 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.  

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第7题
[单选题] Refer to the exhibit. During the process of configuring a virtual link to connect area 2 with the backbone area, the network administrator received this console message on R3: *Mar 1 00:2 5:01.084: %OSPF -4- ERRRCV: Received invalid packet: mismatch area ID, from backbone area must be virtual link but not found from 20.20.20.1, Serial 0 .How should the virtual link be configured on the OSPF routers to establish full connectivity between the areas?（）

A、R1(config - router)# area 0 virtual - link 1.1.1.1R3(config - router)# area 2 virtual - link 3.3.3.3  B、R1(config - router)# area 1 virtual - link 2.2.2.2 R3(config - router)# area 1 virtual - link 2.2.2.2  C、R1(config - router)# area 1 virtual - link 20.20 .20.2 R3(config - router)# area 1 virtual - link 30.30.30.2  D、R1(config - router)# area 1 virtual - link 30.30.30.3 R3(config - router)# area 1 virtual - link 20.20.20.1  E、R1(config - router)# area 1 virtual - link 3.3.3.3 R3(config - router)# area 1 virtual - link 1.1 .1.1  

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第8题
[单选题] Examine the following excerpt from the show ip eigrp topology 10.2.2.0/24 command on router R1.Which answer can be verified as definitely true based on this output?（） External data: Originating router is 10.1.1.1 AS number of route is 1 External protocol is OSPF, external metric is 64 Administrator 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  

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第9题
[单选题] You administer a network that uses two routers， R1 and R2， configured as an HSRP group to  provide redundancy for the gateway. Router R1 is the active router and has been configured as  follows：   R1#configure terminal   R1（config）#interface fa0/0   R1（config-if）#ip address 10.10.0.5 255.255.255.0   R1（config-if）#standby 1 priority 150   R1（config-if）#standby preempt delay minimum 50   R1（config-if）#standby 1 track interface fa0/2 15   R1（config-if）#standby 1 ip 10.10.0.20   Which of the following describes the effect the standby preempt de

A、 The HSRP priority for router R1 will increase to 200.  B、 Router R1 will become the standby router if the priority drops below 50.  C、 The HSRP priority for router R1 will decrease to 50 points when Fa0/2 goes down.    D、 Router R1 will wait 50 seconds before attempting to preempt the active router.  

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