You have just completed an OSPF implementation. While executing your verification plan, you determine that R1 is not able to establish full OSPF adjacency with R2. The show ip ospf neighbor comman d output on R1 shows that R2 is stuck in the INIT state. What could be the cause of this problem?（）A、DR and BDR election errors between R1 and R2.B、The R2 router has not received the OSPF hello packets from the R1 router.C、Mismatched interface ma ximum transmission unit (MTU) configuration between the R1 and R2.D、Mismatched OSPF hello interval configuration between the R1 and R2E、Corrupted LSAs exchanges between the R1 and R2.
You have just completed an OSPF implementation. While executing your verification plan, you determine that R1 is not able to establish full OSPF adjacency with R2. The show ip ospf neighbor comman d output on R1 shows that R2 is stuck in the INIT state. What could be the cause of this problem?（）
- A、DR and BDR election errors between R1 and R2.
- B、The R2 router has not received the OSPF hello packets from the R1 router.
- C、Mismatched interface ma ximum transmission unit (MTU) configuration between the R1 and R2.
- D、Mismatched OSPF hello interval configuration between the R1 and R2
- E、Corrupted LSAs exchanges between the R1 and R2.
相关考题：
Ten routers, R1 through R10, connect in a partial mesh over Frame Relay. For the mesh, R1 and R2 have PVCs connected to all other routers, but Routers R3 through R10 act as branch routers, with only two PVCs - one to R1 and one to R2. The routers u se IP subnet 10.1.1.0/24, with addresses 10.1.1.1, 10.1.1.2, and so on, through 10.1.1.10, respectively. The routers all use Inverse ARP to learn Frame Relay mapping information. All routers use a multipoint subinterface with network type point - tomultip oint nonbroadcast. A co - worker‘s implementation plan lists lots of configuration commands related to this design. The design states that all hosts should be able to ping all other hosts.Which commands are required for proper functioning of OSPF in this case?（）A. frame - relay map commands on R3 - R10 referencing the other routers in this groupB. Nine OSPF neighbor commands on each routerC. Nine OSPF neighbor commands on R1 and R2, with only two such commands on R3 - R10D. R1 and R2 with ip ospf prio rity 1 commands to ensure they become DR and BDRE. R3 - R10 with ip ospf priority 0 commands to ensure they do not become DR or BDR
Routers R1 and R2, OSPF neighbors in area 0 over their Fa0/0 interfaces (respectively), currently both successfully use OSPF MD5 authentication. The OSPF configuration includes the area 0 authentication command under the router ospf 1 command.Which of the following commands must have been configur ed on R1‘s Fa0/0 interface?（）A. ip ospf authentication nullB. ip ospf authentication message - digestC. ip ospf authentication -key whatever- it - isD. ip ospf message - digest - key 1 md5 whatever - it - isE. ip ospf md5 1 key whatever - it - is
Routers R1 and R2 are OSPF neighbors using their Fa0/0 interfaces, respectively, using default settings for all timers. An engineer ad ds the ip ospf hello - interval 6 command to R1‘s Fa0/0 configuration.Which of the following is true regarding the results from this change?（）A. The show ip ospf neighbor command on R1 lists the revised Hello timerB. The show ip ospf interfac e brief command on R1 lists the revised Hello timerC. The R1 - R2 neighborship fails due to Hello timer mismatcHD. The show ip ospf interface command on R1 lists the revised Hello timer
Rout er R1 directly connects to subnet 10.1.1.0/24 with its Fa0/0 interface. R1 can ping four other working OSPF routers in that subnet. R1 is neither the designated router (DR) nor backup DR (BDR). OSPF is working correctly on all five routers.Which of the following is true on R1?（）A. The show ip ospf neighbors command lists two neighbors off Fa0/0.B. The show ip ospf neighbors command lists four neighbors off Fa0/0.C. The show ip ospf neighbors command lists two neighbors off Fa0/0 in the FULL state.D. The show ip ospf neighbors command lists two neighbors off Fa0/0 in the DISCO state.
Refer to the exhibit. Which two Cisco IOS commands on R2 would verify its OSPF neighbor relationships?() A.show ip ospfB.show ip ospf interfaceC.show ip ospf neighborD.show ip ospf databaseE.show ip ospf statisticsF.show running - config begin router ospf
You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds.What could be the cause of this problem?（）A. OSPF authentication errors between some of the routersB. Two routers have the same OSPF router IDC. Issues with mistuned OSPF timersD. OSPF LSA pacing issues between some of the routersE. OSPF neighbor adjacency problems between some of the routers
Refer to the exhibit. You have completed an OSPF implementation, and you are verifying OSPF operation. You notice that router A and router B are stuck in the two - way state. From the show ip ospf interface command output, what is the cause of this issue?（）A. All OSPF implementations must have at le ast one interface in area 0.B. You are attempting to run in the broadcast mode over an NBMA interface.C. Both routers are configured to function as a BDR; therefore, there is no DR router.D. Someone has changed the OSPF router ID; therefore you must clear the OSPF process.E. The OSPF priority is set to 0 on both routers; therefore neither can become the DR.
You have just completed an OSPF implementation. While executing your verification plan, you determine that R1 is not able to establish full OSPF adjacency with R2. The show ip ospf neighbor comman d output on R1 shows that R2 is stuck in the INIT state. What could be the cause of this problem?（）A. DR and BDR election errors between R1 and R2.B. The R2 router has not received the OSPF hello packets from the R1 router.C. Mismatched interface ma ximum transmission unit (MTU) configuration between the R1 and R2.D. Mismatched OSPF hello interval configuration between the R1 and R2E. Corrupted LSAs exchanges between the R1 and R2.
Refer to the exhibit. OSPF is configured on all routers in the network. On the basis of the show ip ospf n eighbor output, what prevents R1 from establishing a full adjacency with R2? () A. Router R1 will only establish full adjacency with the DR and BDR on broadcast multi- access networks.B. Router R2 has been elected as a DR for the broadcast multiaccess network in OSPF area 1.C. Routers R1 and R2 are configured as stub routers for OSPF area 1 and OSPF area 2.D. Router R1 and R2 are configured for a virtual link between OSPF area 1 and OSPF area 2.E. The Hello parameters on routers R1 and R2 do not m atch.
OSPF is configured over a Frame Relay network as shown in the exhibit. All PVCs are active.However, R1 and R3 fail to see all OSPF routes in their routing tables. The show ip ospf neighbor command executed on R2 shows the state of t he neighbors. What should be done to fix the problem? （）A. The ip ospf network broadcast command should be configured on each Frame Relay interfaceB. The ip ospf network non -broadcast command should be configured on each Frame Relay interfaceC. Th e ip ospf priority value on the spoke routers should be set to 0D. The ip ospf priority value on the hub router should be set to 0E. The neighbor command should be configured under the OSPF routing process on all routers
What are two Cisco IOS commands that can be used to view neighbor adjacencies?() A. show ip ospf interfacesB. show ip ospf protocolsC. show ip ospf neighborsD. show ip ospf database
On your OSPF network, routers TK1 and TK2 belong to the same Ethernet network. However, they are unable to establish an adjacency over this link. While troubleshooting this problem, you issue the show ip ospf interface Ethernet 0command on each router. The output from these commands is displayed below:What is the underlying cause of the routers failing to become adjacent?（）A. The OSPF area is misconfigured.B. The priority on TK2 should be set lower.C. The cost on TK2 should be set lower.D. The hello and dead timers are misconfigured.E. You need to add a backup designated router to the network.F. The OSPF process ID numbers do not match.
A network administrator is troubleshooting the OSPF configuration of routers R1 and R2. The routers cannot establish an adjacency relationship on their common Ethernet link. The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2. Based on the information in the graphic, what is the cause of this problem?（）A. The OSPF area is not configured properly.B. The priority on R1 should be set higher.C. The cost on R1 should be set higher.D. The hello and dead timers are not configured properly.E. A backup designated router needs to be added to the network.F. The OSPF process ID numbers must match.
A network administrator is troubleshooting the OSPF configuration of routers R1 and R2.The routers cannot establish an adjacency relationship on their common Ethernet link.The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2.Based on the information in the graphic,what is the cause of this problem?（）A.The OSPF area is not configured properly.B.The priority on R1 should be set higher.C.The cost on R1 should be set higher.D.The hello and dead timers are not configured properly.E.A backup designated router needs to be added to the network.F.The OSPF process ID numbers must match.
A network administrator is troubleshooting the OSPF configuration of routers R1 an dR2.The routers cannote stablish an adjacency relation ship on their common Ethernet link.The graphic shows the output of the show ip ospf interface e0 command for routers R1 an dR2.Based on the information in the graphic，what is the cause of this problem？（）A.The OSPF area is not configured properly.B.The priority on R1 should be set higher.C.The cost on R1 should be set higher.D.The hello and dead timers are not configured properly.E.A backup designated router needs to be added to the network.F.The OSPF process ID numbers must match.
Routers R1 and R2, OSPF neighbors in area 0 over their Fa0/0 interfaces (respectively), currently both successfully use OSPF MD5 authentication. The OSPF configuration includes the area 0 authentication command under the router ospf 1 command. Which of the following commands must have been configur ed on R1's Fa0/0 interface?（）A、ip ospf authentication nullB、ip ospf authentication message - digestC、ip ospf authentication -key whatever- it - isD、ip ospf message - digest - key 1 md5 whatever - it - isE、ip ospf md5 1 key whatever - it - is
（）命令显示OSPF在接收报文时记录的所发生的错误（）A、show ip ospfB、show ip ospf errorC、show ip ospf intterfaceD、show ip ospf neighbor
Two directly connected routers， R1 and R2， are both configured for OSPF graceful restart. R2 is able to switch packets in hardware， but R1 is not. If a network administrator logs on to R2 and performs a system reload， which will be the result？（）A、Traffic forwarded from R2 to or through R1 will continue to be forwarded based on the forwarding table state at the time of the reload.B、R2 will continue to forward traffic to R1， but R1 will drop the traffic because its neighbor adjacency with R2 has failed.C、R2 will continue forwarding traffic to and through R1， but R1 will drop this traffic because it is not capable of maintaining its forwarding state.D、All the traffic R2 is forwarding to or through R1 will be dropped while OSPF rebuilds its neighbor adjacency and forwarding tables.
You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds. What could be the cause of this problem?（）A、OSPF authentication errors between some of the routersB、Two routers have the same OSPF router IDC、Issues with mistuned OSPF timersD、OSPF LSA pacing issues between some of the routersE、OSPF neighbor adjacency problems between some of the routers
An OSPF link can be in multiple states at any given moment （ie. Exstart， exchange， full）. Whichtwo IOS commands let you view the state of the link？（）A、show ip ospfB、show ip protocolsC、show ip ospf neighborD、show ip ospf interface
You have a multi-area OSPF network and you’re concerned because one of the sites is havingconnectivity problem to resources in a different area. Which IOS privileged mode command wouldyou enter to confirm that your network： （A） has a path to its ABR， （B） has a path to its ASBR， and （C）the SPF calculation is functional？（）A、show ip protocolsB、show running-configC、show ip ospf neighborD、show ip ospf border-routers
What are two Cisco IOS commands that can be used to view neighbor adjacencies?（）A、show ip ospf interfacesB、show ip ospf protocolsC、show ip ospf neighborsD、show ip ospf database
多选题Refer to the graphic. R1 is unable to establish an OSPF neighbor relationship with R3. What are possible reasons for this problem?（）AAll of the routers need to be configured for backbone Area 1.BR1 and R2 are the DR and BDR, so OSPF will not establish neighbor adjacency with R3.CA static route has been configured from R1 to R3 and prevents the neighbor adjacency from being established.DThe hello and dead interval timers are not set to the same values on R1 and R3.EEIGRP is also configured on these routers with a lower administrative distance.FR1 and R3 are configured in different areas.
多选题Ten routers, R1 through R10, connect in a partial mesh over Frame Relay. For the mesh, R1 and R2 have PVCs connected to all other routers, but Routers R3 through R10 act as branch routers, with only two PVCs - one to R1 and one to R2. The routers u se IP subnet 10.1.1.0/24, with addresses 10.1.1.1, 10.1.1.2, and so on, through 10.1.1.10, respectively. The routers all use Inverse ARP to learn Frame Relay mapping information. All routers use a multipoint subinterface with network type point - tomultip oint nonbroadcast. A co - worker's implementation plan lists lots of configuration commands related to this design. The design states that all hosts should be able to ping all other hosts. Which commands are required for proper functioning of OSPF in this case?（）Aframe - relay map commands on R3 - R10 referencing the other routers in this groupBNine OSPF neighbor commands on each routerCNine OSPF neighbor commands on R1 and R2, with only two such commands on R3 - R10DR1 and R2 with ip ospf prio rity 1 commands to ensure they become DR and BDRER3 - R10 with ip ospf priority 0 commands to ensure they do not become DR or BDR
单选题Two directly connected routers， R1 and R2， are both configured for OSPF graceful restart. R2 is able to switch packets in hardware， but R1 is not. If a network administrator logs on to R2 and performs a system reload， which will be the result？（）ATraffic forwarded from R2 to or through R1 will continue to be forwarded based on the forwarding table state at the time of the reload.BR2 will continue to forward traffic to R1， but R1 will drop the traffic because its neighbor adjacency with R2 has failed.CR2 will continue forwarding traffic to and through R1， but R1 will drop this traffic because it is not capable of maintaining its forwarding state.DAll the traffic R2 is forwarding to or through R1 will be dropped while OSPF rebuilds its neighbor adjacency and forwarding tables.
多选题Rout er R1 directly connects to subnet 10.1.1.0/24 with its Fa0/0 interface. R1 can ping four other working OSPF routers in that subnet. R1 is neither the designated router (DR) nor backup DR (BDR). OSPF is working correctly on all five routers. Which of the following is true on R1?（）AThe show ip ospf neighbors command lists two neighbors off Fa0/0.BThe show ip ospf neighbors command lists four neighbors off Fa0/0.CThe show ip ospf neighbors command lists two neighbors off Fa0/0 in the FULL state.DThe show ip ospf neighbors command lists two neighbors off Fa0/0 in the DISCO state.
单选题You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds. What could be the cause of this problem?（）AOSPF authentication errors between some of the routersBTwo routers have the same OSPF router IDCIssues with mistuned OSPF timersDOSPF LSA pacing issues between some of the routersEOSPF neighbor adjacency problems between some of the routers
单选题You have just completed an OSPF implementation. While executing your verification plan, you determine that R1 is not able to establish full OSPF adjacency with R2. The show ip ospf neighbor comman d output on R1 shows that R2 is stuck in the INIT state. What could be the cause of this problem?（）ADR and BDR election errors between R1 and R2.BThe R2 router has not received the OSPF hello packets from the R1 router.CMismatched interface ma ximum transmission unit (MTU) configuration between the R1 and R2.DMismatched OSPF hello interval configuration between the R1 and R2ECorrupted LSAs exchanges between the R1 and R2.