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单选题What is the correct virtual link configuration on an OSPF router？（）A area 0.0.0.0{ linkneighbor-id 172.168.18.2 transit-area 0.0.2.1；}B area 0.0.0.0{ virtual-linkneighbor-id 172.168.18.2 transit-area 0.0.2.1；}C area 0.0.0.1{ virtual-linkneighbor-id 172

题目
单选题
What is the correct virtual link configuration on an OSPF router？（）
A

area 0.0.0.0{ linkneighbor-id 172.168.18.2 transit-area 0.0.2.1；}

B

area 0.0.0.0{ virtual-linkneighbor-id 172.168.18.2 transit-area 0.0.2.1；}

C

area 0.0.0.1{ virtual-linkneighbor-id 172.168.18.2 transit-area 0.0.2.1；}

D

area 0.0.2.1{ virtual-linkneighbor-id 172.168.18.2 transit-area 0.0.0.0；}

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相似问题和答案

第1题：

下面哪条命令是正确的，如果要将192.168.1.0/24的业务网段发到OSPF的area0（)

A.Router(config-router)network 192.168.1.0 0.0.0.2550

B.Router(config-router)network 192.168.1.0 0.0.0.255 area0

C.Router(config-router)network 192.168.1.0 255.255.255.255 area0

D.Router(config-router)network 192.168.1.0 0.0.0.0 area0


正确答案：B

第2题：

Several links have been broken so th at for the next day or two, what was formerly a contiguous area 0 has been broken into two parts. However, both parts of area 0 have working links into area 1 using routers with RID 1.1.1.1 and 2.2.2.2.Which answers list the command on the router with RID 1.1.1.1 to create a virtual link to help solve this temporary problem?（）

A. area 0 virtual - link 2.2.2.2

B. area 1 virtual - link 2.2.2.2

C. area 0 source - rid 1.1.1.1 dest - rid 2.2.2.2

D. virtual - link transit - area 1 RID 2.2.2.2


参考答案：B

第3题：

某园区网采用 OSPF路由协议,参与 OSPF的网络地址是 169.111.0.0/16, Cisco路由器的正确配置是 （ ） 。

A) Rounter(config)# router ospf63

Rounter(config-router)# network 169.111.0.0 0.0.0.0 area 0

Rounter(config_router)# area o range 169.111.0.0 255.255.0.0

B) Rounter(config)# router ospf63

Rounter(config-router)# network 169.111.0.0 255.255.0.0 area 0

Rounter(config-router)# area o range 169.111.0.0 255.255.0.0

C) Rounter(config)# router ospf63

Rounter(config-router)# network 169.111.0.0 0.0.255.255 area 0

Rounter(config_router)# area o range 169.1-11.0.0 255.255.0.0

D) Rounter(config)# router ospf63

Rounter(config_router)# network 169.111.0.0 0.0.255.255 area 0

Rounter(config-router)# area o range 169.111.0.0 0.0.255.255


正确答案：C
(23)C) 【解析】在全局配置模式下，使用“router ospf ”命令，启动OSPF进程：在路由器的OSPF配置模式下，使用“network ip<子网号> area<区域号>”命令定义参与OSPF的子网地址，或使用“area<区域号>range<子网地址><子网掩码>”命令定义某一特定范围子网的聚合。由于network 命令中的是子网掩码的反码，所以本题选项c)正确。

第4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


参考答案：E

第5题：

Which description regarding OSPF Network LSAs is correct?()

A. They are originated by Area Border Router and are sent into a single area to advertise an Autonomous System Border Router.

B. They are originat ed by Area Border Routers and are sent into a single area to advertise destinations outside that area.

C. They are originated by the DR on every multi - access network. They include all attached routers including the DR itself.

D. They are originated by every router in the OPSF network. They include all routers on the link, interfaces, the cost of the link, and any known neighbor on the link.


参考答案：C

第6题：

What is the correct virtual link configuration on an OSPF router?()

A.

B.

C.

D.


参考答案：B

第7题：

Refer to the exhibit. What is the effect of the OSPF configuration on router B?()

A. All interfaces will be in area 0

B. The router will be an ABR with s1/0 in area 0 and f0/0 and 0/1 in area 1

C. The route r will be an ABR with s1/0 in area 0 and f0/0 and 0/1 in area 2

D. The router will be an ABR with s1/0 in area 0, f0/0 in area 1, and f0/1 in area 2


参考答案：D

第8题：

某园区网采用OSPF路由协议，参与OSPF的网络地址是169.111.0.0/16 Cisco路由器的正确配置是

A．Router (config) #router ospf 63 Router (config-router) #network 169.111.0.0 0.0.0.0 area 0 Router (config-router) #area 0 range 169.111.0.0 255.255.0.0

B．Router (config) #router ospf 63 Router (config-router) # network 169.111.0.0 255.255.0.0 area 0 Router (config-router) #area 0 range 169.111.0.0 255.255.0.0

C．Router (config) #router ospf 63 Router (config-router) #network 169.111.0.0 0.0.255.255 area 0 Router (config-router) #area 0 range 169.111.0.0 255.255.0.0

D．Router (config) #router ospf 63 Router (config-router) #network 169.111.0.0 0.0.255.255 area 0 Router (config-router) #area 0 range 169.111.0.0 0.0.255.255


正确答案：C

第9题：

Which of the following is an OSPF configuration parameter that is used on an ABR, but not on an internal router?()

A. A virtual link to area 0.

B. OSPF summarization command.

C. default - cost extension to the area command.

D. no - summary extension to the area stub comm and.

E. None of the other alternatives apply


参考答案：D

第10题：

Refer to the diagram. Which OSPF configuration command is required to configure Area 3 a s atotally stubby area?()

A. On the ABR router ospf 10 area 3 stub

B. On all Area 3 routers router ospf 10 area 3 stub

C. On all Area 3 routers router ospf 10 area 3 stub no - summary

D. On the ABR router ospf 10 area 3 nssa

E. On the ABR rou ter ospf 10 area 3 stub no - summary


参考答案：E

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