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单选题
When verifying OSPF virtual link problems, which is an important item to check on the two transit OSPF routers?（）
A
OSPF process ID
B
OSPF router ID
C
OSPF network type
D
OSPF memory usage
E
OSPF CPU utilization
F
OSPF stub area configurations
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更多 “单选题When verifying OSPF virtual link problems, which is an important item to check on the two transit OSPF routers?（）A OSPF process IDB OSPF router IDC OSPF network typeD OSPF memory usageE OSPF CPU utilizationF OSPF stub area configurations” 相关考题
考题
How is the cost of a virtual link in OSPF calculated?()
A. Takes the metric of the outgoing interface.B. Uses the metric that is assigned during configuration.C. Uses the path metric to reach the virtual link neighbor.D. Uses a default of zero unless otherwise specified.
考题
Which CLI command is used to see the current OSPF link－state database?()
A. show ospf databaseB. show ospf neighborC. show protocols ospfD. show ospf link-state
考题
When verifying OSPF virtual link problems, which is an important item to check on the two transit OSPF routers?()
A. OSPF process IDB. OSPF router IDC. OSPF network typeD. OSPF memory usageE. OSPF CPU utilizationF. OSPF stub area configurations
考题
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
考题
Open Shortes t Path First (OSPF) is a routing protocol developed for Internet Protocol (IP) networks by the Interior Gateway Protocol (IGP) working group of the Internet Engineering Task Force (IETF).Which two statements best describe the OSPF link - state routing pro tocol?（）A. OSPF sends updates every 10 secondsB. OSPF sends triggered updates when a network change occursC. When a link state is changed, the router that detected the change creates a link - state advertisement (LSA) and propagates it to all OSPF devices using the 224.0.0.6 multicast addressD. OSPF sends summaries of individual link- state entries every 30 minutes to ensure LSDB synchronization
考题
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 3.3.3.3B.R1(config - router)# area 1 virtual - link 2.2.2.2 R3(config - router)# area 1 virtual - link 2.2.2.2C.R1(config - router)# area 1 virtual - link 20.20 .20.2 R3(config - router)# area 1 virtual - link 30.30.30.2D.R1(config - router)# area 1 virtual - link 30.30.30.3 R3(config - router)# area 1 virtual - link 20.20.20.1E.R1(config - router)# area 1 virtual - link 3.3.3.3 R3(config - router)# area 1 virtual - link 1.1 .1.1
考题
Under which circumstance, ie network type, would an OSPF router establish a neighbor adjacency, even though the DR／BDR election process was not performed?()
A. Point-to-pointB. Broadcast multicastC. Nonbroadcast multicastD. Backbone area 0E. Virtual Link
考题
Which command is used to display the collection of OSPF link states?()
A. show ip ospf lsa databaseB. show ip ospf link-stateC. show ip ospf neighborsD. show ip ospf database
考题
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
考题
Which two features prevent routing loops between the OSPF sites of a customer when the sites aremultihomed or a backdoor link is used between the sites？ （）A、sham linkB、down bitC、virtual linkD、Site of OriginE、domain tag
考题
Which statement is correct about an OSPF sham-link？（）A、A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.B、A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.C、A sham-link is a logical link between PE routers that carries OSPF LSAs and forwards customer traffic across it.D、A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.E、A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.
考题
When verifying OSPF virtual link problems, which is an important item to check on the two transit OSPF routers?（）A、OSPF process IDB、OSPF router IDC、OSPF network typeD、OSPF memory usageE、OSPF CPU utilizationF、OSPF stub area configurations
考题
When verifying the OSPF link state database, which type of LSAs should you expect to see within the different OS PF area types?（）A、All OSPF routers in stubby areas can have type 3 LSAs in their database.B、All OSPF routers in stubby areas can have type 7 LSAs in their database.C、All OSPF routers in totally stubby areas can have type 3 LSAs in their database.D、All OSPF routers in totally stubby areas can have type 7 LSAs in their database.E、All OSPF routers in NSSA areas can have type 3 LSAs in their database.F、All OSPF routers in NSSA areas can have type 7 LSAs in their database.
考题
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?（）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
考题
Open Shortes t Path First (OSPF) is a routing protocol developed for Internet Protocol (IP) networks by the Interior Gateway Protocol (IGP) working group of the Internet Engineering Task Force (IETF). Which two statements best describe the OSPF link - state routing pro tocol?（）A、OSPF sends updates every 10 secondsB、OSPF sends triggered updates when a network change occursC、When a link state is changed, the router that detected the change creates a link - state advertisement (LSA) and propagates it to all OSPF devices using the 224.0.0.6 multicast addressD、OSPF sends summaries of individual link- state entries every 30 minutes to ensure LSDB synchronization
考题
Under which circumstance, ie network type, would an OSPF router establish a neighbor adjacency, even though the DR/BDR election process was not performed?（）A、Point-to-pointB、Broadcast multicastC、Nonbroadcast multicastD、Backbone area 0E、Virtual Link
考题
A network planning diagram shows a large internetwork with many routers. The configurations show that OSPF has been enabled on all interfaces, I P addresses correctly configured, and OSPF workinG. For which of the following cases would you expect a router to create and flood a Type 2 LSA?（）A、When OSPF is enabled on a LAN interface, and the router is the only router connected to the subnet.B、 When OSPF is enabled on a point - to -point serial link, and that router has both the higher router ID and higher interface IP address on the link.C、When OSPF is enabled on a Frame Relay point - to - point subinterface, has the lower RID and lower subinterfa ce IP address, and otherwise uses default OSPF configuration on the interface.D、When OSPF is enabled on a working LAN interface on a router, and the router has been elected BDR.E、None of the other answers is correct.
考题
Which command is used to display the collection of OSPF link states？（）A、show ip ospf lsa database（not A）B、show ip ospf link-stateC、show ip ospf neighborsD、show ip ospf database
考题
Which mechanism can you use to achieve sub-second failover for link failure detection when a switched Ethernet media is used and loss of signal is not supported by the link provider？（）A、OSPF standard hellosB、Cisco Discovery Protocol link detectionC、Bidirectional Forwarding DetectionD、Fast Link PulseE、autonegotiation
考题
多选题Open Shortes t Path First (OSPF) is a routing protocol developed for Internet Protocol (IP) networks by the Interior Gateway Protocol (IGP) working group of the Internet Engineering Task Force (IETF). Which two statements best describe the OSPF link - state routing pro tocol?（）AOSPF sends updates every 10 secondsBOSPF sends triggered updates when a network change occursCWhen a link state is changed, the router that detected the change creates a link - state advertisement (LSA) and propagates it to all OSPF devices using the 224.0.0.6 multicast addressDOSPF sends summaries of individual link- state entries every 30 minutes to ensure LSDB synchronization
考题
单选题Which CLI command is used to see the current OSPF link-state database?（）A
show ospf databaseB
show ospf neighborC
show protocols ospfD
show ospf link-state
考题
多选题Which two features prevent routing loops between the OSPF sites of a customer when the sites aremultihomed or a backdoor link is used between the sites？ （）Asham linkBdown bitCvirtual linkDSite of OriginEdomain tag
考题
单选题How is the cost of a virtual link in OSPF calculated?（）A
Takes the metric of the outgoing interface.B
Uses the metric that is assigned during configuration.C
Uses the path metric to reach the virtual link neighbor.D
Uses a default of zero unless otherwise specified.
考题
单选题Which statement is correct about an OSPF sham-link？（）A
A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.B
A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.C
A sham-link is a logical link between PE routers that carries OSPF LSAs and forwards customer traffic across it.D
A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.E
A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.
考题
单选题Which command is used to display the collection of OSPF link states?（）A
show ip ospf lsa databaseB
show ip ospf link-stateC
show ip ospf neighborsD
show ip ospf database
考题
单选题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
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