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单选题
When learning a new route, if a LSA received is not found in the topological database, what will an internal OSPF router do?（）
A
The sequence numbers are checked, and if the LSA is val id it is entered into the topology database.
B
The LSA is placed in the topological database and an acknowledgement is sent to the transmitting router.
C
The LSA is dropped and a message is sent to the transmitting router.
D
The LSA is flooded imme diately out of all the OSPF interfaces, except the interface from which the LSA was received.
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更多 “单选题When learning a new route, if a LSA received is not found in the topological database, what will an internal OSPF router do?（）A The sequence numbers are checked, and if the LSA is val id it is entered into the topology database.B The LSA is placed in the topological database and an acknowledgement is sent to the transmitting router.C The LSA is dropped and a message is sent to the transmitting router.D The LSA is flooded imme diately out of all the OSPF interfaces, except the interface from which the LSA was received.” 相关考题
考题
The following output exists on Router R1, a router internal to area 1. What can you d etermine as true from the output of the show ip ospf database summary command?()
A. The LSA was created by an ABR due to an area range command.B. The LSA was created by an ASBR due to a summary - address command.C. If cr eated by an area range command, the best metric for a subordinate subnet on that ABR must have been 11.D. None of the other answers is correct.
考题
When learning a new route, if a LSA received is not found in the topological database, what will an internal OSPF router do?()
A. The sequence numbers are checked, and if the LSA is val id it is entered into the topology database.B. The LSA is placed in the topological database and an acknowledgement is sent to the transmitting router.C. The LSA is dropped and a message is sent to the transmitting router.D. The LSA is flooded imme diately out of all the OSPF interfaces, except the interface from which the LSA was received.
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
Which one of the following answer choices below is true regarding the OSPF topology database?()
A. All entries in the topology database will be included on each router.B. All routers in the same OSPF area will have one topology database.C. The Dijkstra algorithm is used in the creation of the topology database.D. LSA packets are used to update and maintain the topology database.
考题
在OSPF中，Link State ID是LSA所描述的那部分链路的标识，下列对于不同类型LSA的Link State ID描述正确的是（）。A、Router LSA的Link State ID是该路由器所连接的网段B、Network LSA的Link State ID是所描述网段上DR的端口IP地址C、Network Summary LSA的Link State ID是所描述的目的网段地址D、ASExternal LSA的Link State ID是所描述的ASBR的Router ID
考题
What does the command clear ipv6 ospf process accomplish?（）A、The shortest path first (SPF) algorithm is performed on the LSA database.B、The OSPF adjacencies are cleared and initiated again.C、The OSPF database is repopulated. Then the shortest path first (SPF) algorithm is performed.D、The route table is cleared. Then the OSPF neighbors are reformed.
考题
The show ip ospf database external command displays information about which OSPF LSA type？（）A、LSA type 1B、LSA type 2C、LSA type 7D、LSA type 3E、LSA type 9F、LSA type 5
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
The command "clear ipv6 ospf process" was issued on a router. What does this commandaccomplish？（）A、The route table is cleared. Then the OSPF neighbors are reformedB、The OSPF adjacencies are cleared and initiated againC、The OSPF database is repopulated and then the shortest path first （SPF） algorithm isperformed.D、The shortest path first （SPF） algorithm is performed on the LSA databaseE、None of the other alternatives apply
考题
Which OSPF LSA type does an ASBR use to originate a default route into an area？ （）A、 LSA 1B、 LSA 3C、 LSA 4D、 LSA 5E、 LSA 7
考题
Which router is doing LSA type 7 to type 5 translation，and why？（）A、Both RTA and RTB will do LSA7/5 translation，since they are both NSSA ABRsB、RTA will do LSA7/5 translation，since it has the lower router IDC、RTB will do LSA7/5 translation，since it has the higher router IDD、The redistributing router will do LSA7/5 translation，since it is within the NSSA
考题
The OSPF External LSA for prefix x.x.x.x exists in the OSPF database， but the prefix is not installed in therouting table. Which are possible explanations？（）A、Inbound distribute-list is configured under the ospf process and it is denying x.x.x.xB、ASBR origination the LSA is not reachableC、Route to the Forwarding Address in not an internal OSPF routeD、Route to the Forwarding Address is an internal OSPF routeE、Route to the ASBR does not follow the same path as the one to the Forwarding Address
考题
Which one of the following answer choices below is true regarding the OSPF topology database?（）A、All entries in the topology database will be included on each router.B、All routers in the same OSPF area will have one topology database.C、The Dijkstra algorithm is used in the creation of the topology database.D、LSA packets are used to update and maintain the topology database.
考题
When learning a new route, if a LSA received is not found in the topological database, what will an internal OSPF router do?（）A、The sequence numbers are checked, and if the LSA is val id it is entered into the topology database.B、The LSA is placed in the topological database and an acknowledgement is sent to the transmitting router.C、The LSA is dropped and a message is sent to the transmitting router.D、The LSA is flooded imme diately out of all the OSPF interfaces, except the interface from which the LSA was received.
考题
During OSPF adjacency formation， what state is a router in when it is sending LSA header information to its neighbor？ （）A、 InitB、 2WayC、 ExStartD、 Exchange
考题
Which router translates the Type 7 LSAs into Type 5 LSAs, according to RFC 1587 (OSPF NSSAOption) in an OSPF NSSA with more than one ABR?（）A、The router receiving the route translates the Type 7 LSA into a Type 5 LSA.B、The ABR with the lowest router ID translates all Type 7 LSAs into Type 5 LSAs.C、The ABR with the highest router ID translates all Type 7 LSAs into Type 5 LSAs.D、All ABRs translate the Type 7 LSAs into Type 5 LSAs depending on which one has the lowest cost to the route.
考题
Which LSA is used in JUNOS software when a OSPF router restarts？（）A、LSA Type 6B、LSA Type 9C、LSA Type 10D、LSA Type 11
考题
单选题Which router is doing LSA type 7 to type 5 translation，and why？（）A
Both RTA and RTB will do LSA7/5 translation，since they are both NSSA ABRsB
RTA will do LSA7/5 translation，since it has the lower router IDC
RTB will do LSA7/5 translation，since it has the higher router IDD
The redistributing router will do LSA7/5 translation，since it is within the NSSA
考题
多选题在OSPF协议中，STUB区域可以传播的LSA类型有（）AType 1 （Router LSA）BType 2 （Network LSA）CType 3 （network summary LSA）DType 4 （ASBR Summary LSA）EType 5 （AS Exteral LSA）
考题
单选题Which OSPF LSA type does an ASBR use to originate a default route into an area？ （）A
LSA 1B
LSA 3C
LSA 4D
LSA 5E
LSA 7
考题
单选题Which router translates the Type 7 LSAs into Type 5 LSAs, according to RFC 1587 (OSPF NSSAOption) in an OSPF NSSA with more than one ABR?（）A
The router receiving the route translates the Type 7 LSA into a Type 5 LSA.B
The ABR with the lowest router ID translates all Type 7 LSAs into Type 5 LSAs.C
The ABR with the highest router ID translates all Type 7 LSAs into Type 5 LSAs.D
All ABRs translate the Type 7 LSAs into Type 5 LSAs depending on which one has the lowest cost to the route.
考题
单选题The command "clear ipv6 ospf process" was issued on a router. What does this commandaccomplish？（）A
The route table is cleared. Then the OSPF neighbors are reformedB
The OSPF adjacencies are cleared and initiated againC
The OSPF database is repopulated and then the shortest path first （SPF） algorithm isperformed.D
The shortest path first （SPF） algorithm is performed on the LSA databaseE
None of the other alternatives apply
考题
单选题During OSPF adjacency formation， what state is a router in when it is sending LSA header information to its neighbor？ （）A
InitB
2WayC
ExStartD
Exchange
考题
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?（）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
单选题What OSPF LSA is used to support MPLS-traffic Engineering ？（）A
External LSA （Type 5 ）B
Opaque LSA （Type 9 ）C
Opaque LSA （Type 10 ）D
Opaque LSA （Type 11 ）E
NSSA LSA （Type 7 ）
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