Which of the following is true about an OSPF area border router (ABR)?()A. The ABR must have multiple interfaces connected to the backbone areAB. An ABR is a router with two interfaces, each connected to a different nonbackbone areAC. The only requirement

题目
Which of the following is true about an OSPF area border router (ABR)?()

A. The ABR must have multiple interfaces connected to the backbone areA

B. An ABR is a router with two interfaces, each connected to a different nonbackbone areA

C. The only requirement to be considered an ABR is at least one interface connected to the backbone areA

D. An ABR must have at least one interface in the backbone area plus at least one other interface in a nonbackbone areA

相似考题

1.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.

2.To make OSPF area 4 totally stubby, the following command was issued on the ABR in router configuration mode: area 4 stub.Which two things need to be done to finish making area 4 a totally stubby area?（）A. Apply the area 4 stub command to all routers in the areaB. On the ABR, use the area 4 stub command with the no - summary keywordC. On the ABR, specify a default cost for the area with the area default - cost commandD. On the ABR, use the default - information originate command to inject a default route into area 4E. Use the auto - cost command on each router in the area to automatically determine the cost to other OSPF areas

3.Refer to the exhibit. The partial configuration for an OSPF ASBR and an Area 0 ABR is shown. Assume the OSPF configurations throughout the network are operable. Which statement about these configurations is true? （）A. The ASBR route - maps are basically useless, because there are no deny prefix - lists.B. LSA Type 5s wil l not be received by the ABR from the ASBR.C. The OSPF backbone will not learn any RFC 1918 addresses.D. The matched prefix - list addresses will be given a metric of 255, which is essentially unreachable.

4.Refer to the exhibit. Router C was configured so that it could form an adja cency with three OSPF neighbors, one connected to each of its three physical interfaces. Which statement is correct about router C?（）A. It is configured and functioning correctly as an OSPF internal router.B. It is configured and functioning correc tly as an ABR attached to stub area 4.C. It is configured and functioning correctly as an ASBR attached to external area 4.D. It is configured and functioning correctly as an ABR attached to totally stubby area 4.E. It is not configured correctly to function as specified.

更多“Which of the following is true about an OSPF area border router (ABR)?() ”相关问题

  • 第1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2题：

    Which is true about OSPF router－id?()

    A.It is used for type 1 router LSA

    B.Highest IP address of the loopback is used

    C.router-id needs to be matched on ospf neighbors

    D.router-id is 16 bit


    参考答案：A, B

  • 第3题：

    Which statement about OSPF ASBR summary LSA is true？（）

    • A、It is generated by an ASBR and indicates the reachability to an ABR located in another area.
    • B、It is generated by ABR and indicates the reachability to an ASBR located in another AS.
    • C、It is generated by ABR and indicates reachability to itself.
    • D、It is generated by ABR and indicates the reachability to an ASBR located in another area.
    • E、It is generated by ASBR and indicates the reachability to an ABR.

    正确答案:D

  • 第4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.

    正确答案:C

  • 第5题：

    Which statement about OSPF authentication is true？（）

    • A、To enable OSPF authentication in a network， OSPF area 0 authentications must be enabled first
    • B、The payload of OSPF version 3 packets contains no authentication information
    • C、OSPF version 3 supports Advanced Encryption Standard
    • D、OSPF version 3 uses router ID as a key to encrypt OSPF hello packets
    • E、OSPF MD5 authentication uses TCP， and Plan Test authentication uses UDP

    正确答案:B

  • 第6题：

    Area Border Router （ABR） is a router located on the border of one or more OSPF areas that connect those areas to the backbone network. An ABR will inject a default route into which two types of areas？（）

    • A、Area 0
    • B、NSSA
    • C、Totally stubby
    • D、Stub

    正确答案:C,D

  • 第7题：

    Into which two types of areas would an area border router (ABR) inject a default route?（）

    • A、stub
    • B、the autonomous system of an exte rior gateway protocol (EGP)
    • C、NSSA
    • D、totally stubby
    • E、the autonomous system of a different interior gateway protocol (IGP)
    • F、area 0

    正确答案:A,D

  • 第8题：

    多选题
    Which of the following OSPF commands, when used together, will put the network 192.168.10.0/24 into OSPF area 0?（）
    A

    Router(config-router)# network 192.168.10.0 0.0.0.255 0

    B

    Router(config-router)# network 192.168.10.0 0.0.0.255 area 0

    C

    Router(config-router)# network 192.168.10.0 255.255.255.0 area 0

    D

    Router(config)# router ospf 0

    E

    Router(config)# router ospf 1


    正确答案： C,E
    解析： 暂无解析

  • 第9题：

    单选题
    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.


    正确答案： C
    解析： 暂无解析

  • 第10题：

    多选题
    To make OSPF area 4 totally stubby, the following command was issued on the ABR in router configuration mode: area 4 stub.Which two things need to be done to finish making area 4 a totally stubby area?（）
    A

    Apply the area 4  stub command to all routers in the area

    B

    On the ABR, use the area 4 stub command with the no - summary keyword

    C

    On the ABR, specify a default cost for the area with the area default - cost command

    D

    On the ABR, use the default - information originate  command to inject a default route into area 4

    E

    Use the auto - cost command on each router in the area to automatically determine the cost to other OSPF areas


    正确答案： C,A
    解析： 暂无解析

  • 第11题：

    单选题
    In JUNOS software, which statement is true regarding the OSPF advertisement of the loopback IP address on the ABR?（）
    A

    When Area 0 is active, the loopback interface must be configured in OSPF for it to be advertised.

    B

    When Area 0 is active, the loopback address is automatically advertised into other areas.

    C

    When Area 0 is active, the OSPF router-id must match the loopback address for the loopback address to be advertised.

    D

    When Area 0 is active, the router-id must be configured for the loopback address to be advertised.


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    Which statement is true about the frequency of OSPF LSA transmissions？（）
    A

     They are configured per OSPF area.

    B

     They are configured per virtual router.

    C

     They are configured per OSPF process.

    D

     They are configured per OSPF interface.


    正确答案： D
    解析： 暂无解析

  • 第13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

  • 第14题：

    Which is true about OSPF router-id?（）

    • A、It is used for type 1 router LSA
    • B、Highest IP address of the loopback is used
    • C、router-id needs to be matched on ospf neighbors
    • D、router-id is 16 bit

    正确答案:A,B

  • 第15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

    正确答案:D

  • 第16题：

    Which three statements about OSPF areas are true?（）

    • A、Areas introduce a boundary on the link - state updates.
    • B、Areas are  logical definitions specific to any given router.
    • C、All routers within an area have the exact link - state database.
    • D、The calculation of the Dijkstra algorithm on a router is limited to changes within an area.
    • E、The area designated router will always  have a priority of 0.

    正确答案:A,C,D

  • 第17题：

    Which statement is true about the frequency of OSPF LSA transmissions？（）

    • A、 They are configured per OSPF area.
    • B、 They are configured per virtual router.
    • C、 They are configured per OSPF process.
    • D、 They are configured per OSPF interface.

    正确答案:D

  • 第18题：

    Which of the following OSPF commands, when used together, will put the network 192.168.10.0/24 into OSPF area 0?（）

    • A、Router(config-router)# network 192.168.10.0 0.0.0.255 0
    • B、Router(config-router)# network 192.168.10.0 0.0.0.255 area 0
    • C、Router(config-router)# network 192.168.10.0 255.255.255.0 area 0
    • D、Router(config)# router ospf 0
    • E、Router(config)# router ospf 1

    正确答案:B,E

  • 第19题：

    Which of the following is true about an OSPF area border router (ABR)?（）

    • A、The ABR must have multiple interfaces connected to the backbone areA
    • B、An ABR is a router with two interfaces, each connected to a different nonbackbone areA
    • C、The only requirement to be considered an  ABR is at least one interface connected to the backbone areA
    • D、An ABR must have at least one interface in the backbone area plus at least one other interface in a nonbackbone areA

    正确答案:D

  • 第20题：

    多选题
    Which three statements about OSPF areas are true?（）
    A

    Areas introduce a boundary on the link - state updates.

    B

    Areas are  logical definitions specific to any given router.

    C

    All routers within an area have the exact link - state database.

    D

    The calculation of the Dijkstra algorithm on a router is limited to changes within an area.

    E

    The area designated router will always  have a priority of 0.


    正确答案： B,E
    解析： 暂无解析

  • 第21题：

    单选题
    Which statement about OSPF ASBR summary LSA is true？（）
    A

    It is generated by an ASBR and indicates the reachability to an ABR located in another area.

    B

    It is generated by ABR and indicates the reachability to an ASBR located in another AS.

    C

    It is generated by ABR and indicates reachability to itself.

    D

    It is generated by ABR and indicates the reachability to an ASBR located in another area.

    E

    It is generated by ASBR and indicates the reachability to an ABR.


    正确答案： A
    解析： 暂无解析

  • 第22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


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Which of the following is true about an OSPF area border router (ABR)?（）
    A

    The ABR must have multiple interfaces connected to the backbone areA

    B

    An ABR is a router with two interfaces, each connected to a different nonbackbone areA

    C

    The only requirement to be considered an  ABR is at least one interface connected to the backbone areA

    D

    An ABR must have at least one interface in the backbone area plus at least one other interface in a nonbackbone areA


    正确答案： A
    解析： 暂无解析

  • 第24题：

    多选题
    Area Border Router （ABR） is a router located on the border of one or more OSPF areas that connect those areas to the backbone network. An ABR will inject a default route into which two types of areas？（）
    A

    Area 0

    B

    NSSA

    C

    Totally stubby

    D

    Stub


    正确答案： D,C
    解析： 暂无解析

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