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Which is true about OSPF router－id?()A.It is used for type 1 router LSAB.Highest IP address of the loopback is usedC.router-id needs to be matched on ospf neighborsD.router-id is 16 bit

题目
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

相似考题

1.Of the existing theories about the origin of carnival ，people are not sure which theory is more true to the fact.()

2.Which statement is true about the frequency of OSPF LSA transmissions?()A.AB.BC.CD.D

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.Referring to the exhibit, which two statements are true?()A. The route 192.168.1.0/25 is acceptedB. The route 192.168.2.0/24 is acceptedC. OSPF routes will be exported into RIPD. RIP routes will be exported into OSPF

更多“Which is true about OSPF router－id?() ”相关问题

  • 第1题：

    Refer to the exhibit. Which statement is true about the configuration? ()

    A. RTA will not establish an OSPF adjacency w ith RTB

    B. RTA will send OSPF hello packets, but will not send OSPF updates

    C. RTA will not accept OSPF hello packets from RTB

    D. RTA will send OSPF updates, but will not establish an adjacency with RTB


    参考答案：A

  • 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

    正确答案:A,B

  • 第3题：

    When the Cisco IOS OSPF command ip ospf dead-interval minimal hello-multiplier 5 is configured， which two statements are true？ （）

    • A、OSPF hello interval is 5 seconds
    • B、OSPF hello interval is 1 second
    • C、OSPF dead interval is 1 second
    • D、OSPF dead interval is 5 seconds
    • E、OSPF dead interval is 20 seconds
    • F、OSPF hello interval is 0.2 second

    正确答案:C,F

  • 第4题：

    A switch has been configured with two vlans and is connected to a router with a trunk for inter-vlan routing.OSPF has been configured on the router，as the routing protocol for the network.Which statement about thisnetwork is true？（）

    • A、For the two vlans to communicate，a network statement for the trunk interface needs to be added to the  OSPF configuration.
    • B、For the two vlans to communicate， a network statement for each subinterface needs to be  added  to the OSPF configuration.
    • C、Direct inter-vlan communication does not require OSPF
    • D、OSPF cannot be used if router-on-a-stick is configured on the router

    正确答案:C

  • 第5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6题：

    Which statement is true about the command ipv6 ospf 1 area 0?（）

    • A、It must be issued before the network command to enable the OSPF pr ocess for IPv6.
    • B、It must be issued after the network command to enable the OSPF process for IPv6.
    • C、It must be issued in router global configuration mode to enable the OSPF process for IPv6.
    • D、It must be issued in interface configuration mode to ena ble the OSPF process for IPv6.

    正确答案:D

  • 第7题：

    Which two statements about OSPF IPv6 routing are true？（）

    • A、It requires OSPF version 3.
    • B、automatically detects neighbors over NHMA interfaces
    • C、It supports encryption using
    • D、It uses LSA type 9
    • E、It uses LSA type 8

    正确答案:A,E

  • 第8题：

    单选题
    In IPv6, the interfaces running OSPF can be configured with multiple ad dress prefixes. Which statement is true about the IPv6 addresses that can be included into the OSPF process?" （）
    A

    Specific addresses can be selected using a prefix list.

    B

    Specific addresses can be selected using a route map.

    C

    Specific addresses cann ot be selected for importation into the OSPF process.

    D

    Specific addresses can be selected using an ACL.


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    Which statement is true about the command ipv6 ospf 1 area 0?（）
    A

    It must be issued before the network command to enable the OSPF pr ocess for IPv6.

    B

    It must be issued after the network command to enable the OSPF process for IPv6.

    C

    It must be issued in router global configuration mode to enable the OSPF process for IPv6.

    D

    It must be issued in interface configuration mode to ena ble the OSPF process for IPv6.


    正确答案： B
    解析： 暂无解析

  • 第10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11题：

    多选题
    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： B,C
    解析： 暂无解析

  • 第12题：

    多选题
    Which two statements are true about IS -IS routing?（）
    A

    Based on the default timers, OSPF d etects a failure faster than IS - IS does.

    B

    OSPF default timers permit more tuning than IS - IS does.

    C

    IS - IS is more efficient than OSPF in the use of CPU resources.

    D

    OSPF is more scalable than IS - IS because of its ability to identify normal, stub, an d NSSA areas.

    E

    IS - IS and OSPF are both Open Standard, link - state routing protocols which support VLSM.


    正确答案： C,B
    解析： 暂无解析

  • 第13题：

    True friendship is like sound health,the value ___________is seldom known until it is lost.

    A.on which
    B.of which
    C.about which
    D.among which

    答案：B
    解析：
    考查非限定性定语从句。先行词为soundhealth，关系词与value之间为所属关系．所以选用ofwhich。句意为“友谊像健康一样，直到失去才知道它的珍贵”。

  • 第14题：

    在配置OSPF时，工程师经常使用环回口地址左右router-id，这么做的好处是（）

    • A、环回口是逻辑接口，永远不会down，使用环回口作为router-id可以使OSPF进程更加稳定，减少网络振荡的可能
    • B、环回口是逻辑接口，永远不会down，使用环回口作为router-id可以使OSPF建立邻居时收敛速度更快
    • C、环回口是物理接口，永远不会down，使用环回口作为router-id可以使OSPF进程更加稳定，减少网络振荡的可能
    • D、环回口是逻辑接口，有时也会down，但是使用环回口作为router-id不但可以使OSPF进程更加稳定，也可以加快OSPF邻居的快速收敛，减少网络振荡的可能

    正确答案:A

  • 第15题：

    Which two statements are true about IS -IS routing?（）

    • A、Based on the default timers, OSPF d etects a failure faster than IS - IS does.
    • B、OSPF default timers permit more tuning than IS - IS does.
    • C、IS - IS is more efficient than OSPF in the use of CPU resources.
    • D、OSPF is more scalable than IS - IS because of its ability to identify normal, stub, an d NSSA areas.
    • E、IS - IS and OSPF are both Open Standard, link - state routing protocols which support VLSM.

    正确答案:C,E

  • 第16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17题：

    Which statement is true about IBGP routers? （）

    • A、They must be fully meshed
    • B、They can be in a different AS
    • C、They must be directly connected

    正确答案:C

  • 第18题：

    Which three statements are correct about the differences in IS - IS and OSPF?（）

    • A、IS - IS is more CPU - intensive than is OSPF
    • B、For greater fine tuning there are more IS - IS timers
    • C、IS - IS LSP con tains TLV fields and OSPF LSU contains the LSAs
    • D、New additions to the protocol are easily implemented in OSPF but not with IS - IS
    • E、OSPF has more area types than does IS - IS

    正确答案:B,C,E

  • 第19题：

    多选题
    Which two statements about route redistribution when implementing OSPF are true?（）
    A

    Routes learned using any IP routing protocol can only be redistributed into non IP routing protocols.

    B

    OSPF can import routes learned using EIGRP, RIP, and IS - IS.

    C

    OSPF routes cannot be exported into EIGRP, RIP, an d IS - IS.

    D

    At the interdomain level, OSPF cannot import routes learned using BGP.

    E

    OSPF routes can be exported into BGP.


    正确答案： D,A
    解析： 暂无解析

  • 第20题：

    多选题
    Which two statements about OSPF IPv6 routing are true？（）
    A

    It requires OSPF version 3.

    B

    automatically detects neighbors over NHMA interfaces

    C

    It supports encryption using

    D

    It uses LSA type 9

    E

    It uses LSA type 8


    正确答案： D,B
    解析： 暂无解析

  • 第21题：

    单选题
    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： A
    解析： 暂无解析

  • 第22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23题：

    单选题
    A switch has been configured with two vlans and is connected to a router with a trunk for inter-vlan routing.OSPF has been configured on the router，as the routing protocol for the network.Which statement about thisnetwork is true？（）
    A

    For the two vlans to communicate，a network statement for the trunk interface needs to be added to the  OSPF configuration.

    B

    For the two vlans to communicate， a network statement for each subinterface needs to be  added  to the OSPF configuration.

    C

    Direct inter-vlan communication does not require OSPF

    D

    OSPF cannot be used if router-on-a-stick is configured on the router


    正确答案： B
    解析： 暂无解析

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