单选题What is the purpose of the OSPF hello packet？（）Aadvertises reachable networksBacknowledges the receipt of update packetsCestablishes and maintains neighbor relationshipsDdescribes the contents of the link-state database

题目
单选题
What is the purpose of the OSPF hello packet？（）
A

 advertises reachable networks

B

 acknowledges the receipt of update packets

C

 establishes and maintains neighbor relationships

D

 describes the contents of the link-state database

相似考题

1.What is the purpose of the RSVP hello interval?()A. It is the size of the RSVP hello packetB. It is how long it maintains RSVP neighborsC. It is the length of time between RSVP hello packetsD. It is how long the router waits before declaring a router to be down

2.What is the purpose of the OSPF link－state update packet?()A. describes a change to the OSPF hello timerB. carries one or more link-state advertisementsC. establishes and maintains neighbor relationshipsD. describes the contents of the entire link-state database

3.What is the purpose of the OSPF router ID in a OR／BOR election?()A. It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point networkB. It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF routerC. It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access networkD. It is used to determine which interfaces will send Hello packets to neighboring OSPF routers

4.What is the purpose of the OSPF hello packet?()A.AB.BC.CD.D

更多“单选题What is the purpose of the OSPF hello packet？（）A  advertises reachable networksB  acknowledges the receipt of update packetsC  establishes and maintains neighbor relationshipsD  describes the contents of the link-state database”相关问题

  • 第1题：

    Which three statements about the EIGRP routing protocol are true?()

    A. EIGRP supports five generic packet types, including hello, database description (DBD), link state request (LSR), link - state update (LSU), and LSAck.

    B. EIGRP sends periodic hello packets to the multicast IP address 224.0.0.10.

    C. EIGRP will not form a neighbor relationship with another peer when their K values are mismatched.

    D. EIGRP sends periodic hello packets to the multicast IP address 224.0.0.9.

    E. E IGRP will form a neighbor relationship with another peer even when their K values are mismatched.

    F. EIGRP supports five generic packet types, including hello, update, query, reply, and ACK packets.


    参考答案：B, C, F

  • 第2题：

    The OSPF Hello protocol performs which of the following tasks (Choose two.)()。

    A.It provides dynamic neighbor discovery.

    B.It detects unreachable neighbors in 90 second intervals.

    C.It maintains neighbor relationships.

    D.It negotiates correctness parameters between neighboring interfaces.

    E.Ituses timers to elect the router with the fastest links as the designated router.

    F.It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF.


    参考答案：A, C

  • 第3题：

    Which three are benefits of IS - IS over OSPF?（）

    • A、supports route tags
    • B、supports more routers in an area
    • C、does not require Hello packets to establish neighbor relationships
    • D、produces fewer link state advertisements for a given network
    • E、supports network layer protocols other than IP
    • F、requires fewer neighbor relationships in a broadcast multiaccess network

    正确答案:B,D,E

  • 第4题：

    The OSPF hello protocol performs which of the following tasks?（）

    • A、It provides dynamic neighbor discovery
    • B、It detects unreachable neighbors in 90 second intervals
    • C、It maintains neighbor relationships
    • D、It negotiates correctness parameters between neighboring interfaces
    • E、It uses timers to elect the router witch the fastest links as the designated router
    • F、It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF

    正确答案:A,C

  • 第5题：

    What is the purpose of the OSPF hello packet？（）

    • A、 advertises reachable networks
    • B、 acknowledges the receipt of update packets
    • C、 establishes and maintains neighbor relationships
    • D、 describes the contents of the link-state database

    正确答案:C

  • 第6题：

    OSPF选举DR、BDR时会使用如下的那些报文？（）

    • A、HELLO报文（Hello Packet）
    • B、DD报文（Database Description Packet）
    • C、LSR报文（LinkState Request Packet）
    • D、LSU报文（LinkState Update Packet）
    • E、LSAck报文（LinkState Acknowledgmen Packet）

    正确答案:A

  • 第7题：

    What is the purpose of the OSPF router ID in a OR/BOR election?（）

    • A、It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point network
    • B、It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF router
    • C、It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access network
    • D、It is used to determine which interfaces will send Hello packets to neighboring OSPF routers

    正确答案:C

  • 第8题：

    What is the purpose of unicast reverse path forwarding?（）

    • A、to validate packet receipt on interfaces where the traffic should be received
    • B、to forward packets out the interfaces where the traffic should be received
    • C、to forward packets out the interfaces where the traffic should be sent
    • D、to validate packet receipt on interfaces where the traffic should be sent

    正确答案:A

  • 第9题：

    单选题
    What is the purpose of the RSVP hello interval?（）
    A

    It is the size of the RSVP hello packet

    B

    It is how long it maintains RSVP neighbors

    C

    It is the length of time between RSVP hello packets

    D

    It is how long the router waits before declaring a router to be down


    正确答案： A
    解析： 暂无解析

  • 第10题：

    多选题
    The OSPF hello protocol performs which of the following tasks?（）
    A

    It provides dynamic neighbor discovery

    B

    It detects unreachable neighbors in 90 second intervals

    C

    It maintains neighbor relationships

    D

    It negotiates correctness parameters between neighboring interfaces

    E

    It uses timers to elect the router witch the fastest links as the designated router

    F

    It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF


    正确答案： C,A
    解析： 暂无解析

  • 第11题：

    单选题
    OSPF选举DR、BDR时会使用如下的那些报文？（）。
    A

    HELLO报文（Hello Packet）

    B

    DD报文（Database Description Packet）

    C

    LSR报文（Link State Request Packet）

    D

    LSU报文（Link State Update Packet）


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    What is the purpose of the OSPF router ID in a OR/BOR election?（）
    A

    It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point network

    B

    It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF router

    C

    It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access network

    D

    It is used to determine which interfaces will send Hello packets to neighboring OSPF routers


    正确答案： C
    解析： 暂无解析

  • 第13题：

    The OSPF hello protocol performs which of the following tasks?()

    A. It provides dynamic neighbor discovery

    B. It detects unreachable neighbors in 90 second intervals

    C. It maintains neighbor relationships

    D. It negotiates correctness parameters between neighboring interfaces

    E. It uses timers to elect the router witch the fastest links as the designated router

    F. It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF


    参考答案：A, C

  • 第14题：

    OSPF选举DR、BDR时会使用如下的那些报文？（）。

    • A、HELLO报文（Hello Packet）
    • B、DD报文（Database Description Packet）
    • C、LSR报文（Link State Request Packet）
    • D、LSU报文（Link State Update Packet）

    正确答案:A

  • 第15题：

    What kind of packets does OSPF send to keep up connectivity with its neighboring routers?（）

    • A、SPF packets
    • B、hello packets
    • C、keepalive packets
    • D、dead interval packets
    • E、LSU packets

    正确答案:B

  • 第16题：

    What is the purpose of the RSVP hello interval?（）

    • A、It is the size of the RSVP hello packet
    • B、It is how long it maintains RSVP neighbors
    • C、It is the length of time between RSVP hello packets
    • D、It is how long the router waits before declaring a router to be down

    正确答案:C

  • 第17题：

    下列那些OSPF报文中会出现完整的LSA信息？（）

    • A、HELLO报文（Hello Packet）
    • B、DD报文（Database Description Packet）
    • C、LSR报文（LinkState Request Packet）
    • D、LSU报文（LinkState Update Packet）
    • E、LSAck报文（LinkState Acknowledgmen Packet）

    正确答案:D

  • 第18题：

    如果OSPF链路故障，哪个包广播网络的变化（）

    • A、Link-state advertisement
    • B、Database Description
    • C、Link-state request
    • D、Link-state update

    正确答案:D

  • 第19题：

    下列（）OSPF报文中会出现完整的LSA信息。

    • A、HELLO报文（Hello Packet）
    • B、DD报文（Database DescRIPtion Packet）
    • C、LSR报文（Link State Request Packet）
    • D、LSU报文（LinkState Update Packet）

    正确答案:D

  • 第20题：

    What is the purpose of the OSPF link-state update packet?（）

    • A、describes a change to the OSPF hello timer
    • B、carries one or more link-state advertisements
    • C、establishes and maintains neighbor relationships
    • D、describes the contents of the entire link-state database

    正确答案:B

  • 第21题：

    单选题
    Which CLI command is used to see the current OSPF link-state database?（）
    A

    show ospf database

    B

    show ospf neighbor

    C

    show protocols ospf

    D

    show ospf link-state


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    What is the purpose of the OSPF hello packet？（）
    A

     advertises reachable networks

    B

     acknowledges the receipt of update packets

    C

     establishes and maintains neighbor relationships

    D

     describes the contents of the link-state database


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    What is the purpose of the OSPF link-state update packet?（）
    A

    describes a change to the OSPF hello timer

    B

    carries one or more link-state advertisements

    C

    establishes and maintains neighbor relationships

    D

    describes the contents of the entire link-state database


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    What is the purpose of unicast reverse path forwarding?（）
    A

    to validate packet receipt on interfaces where the traffic should be received

    B

    to forward packets out the interfaces where the traffic should be received

    C

    to forward packets out the interfaces where the traffic should be sent

    D

    to validate packet receipt on interfaces where the traffic should be sent


    正确答案： A
    解析： 暂无解析

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