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 1.1.1.1 R3(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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DR (Designated Router) is for environments where many routers on the same network such as Ethernet. In the following presented network, all routers are reloaded simultaneously, and DR is selected as expected. What is the RTC status?（）
A. 2WAY/DR
B. FULL/DR
C. FULL/DROTHER
D. FULL/BDR
A. show ip ospf interfaces
B. show ip ospf protocols
C. show ip ospf neighbors
D. show ip ospf database
A. less frequent SPF calculations
B. fewer hello packets
C. smaller routing tables
D. reduced LSU overhe ad
E. fewer adjacencies needed
A. show ip ospf database external
B. show ip ospf database nssa - external
C. show ip route ospf
D. show ip ospf datab ase summary
E. show ip route
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
最新試題
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