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When a router undergoes the exchange protocol within OSPF, in what order does it pass through each state?()A.exstart state>exchange state>loading state>full stateB.exstart state>full state>loading state>exchange stateC.Loading state>exchange state>full st

题目
When a router undergoes the exchange protocol within OSPF, in what order does it pass through each state?()

A.exstart state>exchange state>loading state>full state

B.exstart state>full state>loading state>exchange state

C.Loading state>exchange state>full state>exstart state

D.exstart state>loading state>exchange state>full state

相似考题

1.OSPF is a link-state routing protocol。It is designed to be run internal to a single __（71__system。Each OSPF router maintains an identical __（72）__ describing the autonomous system’s topology。From this database，a routing table is calculated by constructing a shortest-path __（73）__。OSPF recalculates routes quickly in the face of topological changes，utilizing a minimum of routing __（74）__ traffic。OSPF provides support for equal-cost multipath。An area routing capability is provided，enabling an additional level of routing protection and a reduction in routing protocol __（75）__。A.autonomousB.networkC.computerD.server

2.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

3.OSPF is a link-state routing protocol。It is designed to be run internal to a single （）system。Each OSPF router maintains an identical （）describing the autonomous system’s topology。From this database，a routing table is calculated by constructing a shortest-path （）。OSPF recalculates routes quickly in the face of topological changes，utilizing a minimum of routing （） traffic。OSPF provides support for equal-cost multipath。An area routing capability is provided，enabling an additional level of routing protection and a reduction in routing protocol （75）。A.flow B.state C.traffiC. D.stream

4.During OSPF adjacency formation, in what state is a router when it is negotiating to be in charge of the database synchronization process?()A. InitB. 2WayC. ExStartD. Exchange

更多“When a router undergoes the exchange protocol within OSPF, in what order does it pass through each state?() ”相关问题

  • 第1题：

    Open Shortest Path First (OSPF) was designed as an （ ） gateway protocol, for use in an autonomous system such as a local area network (LAN). It implements Dijkstra's algorithm, also known as the （ ） path first algorithm. As a link-state routing protocol it was based on the link-state algorithm developed for the ARPANET in 1980 and the IS-IS routing protocol. OSPF was first standardised in 1989 as RFC 1131, which is now known as OSPF version 1.Routing protocols like OSPF calculate the shortest route to a destination through the network based on an algorithm. The first routing protocol that was widely implemented, the （请作答此空）, calculated the shortest route based on hops, that is the number of routers that an IP packet had to traverse to reach the destination host. RIP successfully implemented dynamic routing, where routing tables change if the network topology changes. But RIP did not adapt its routing according to changing network conditions, such as data-transfer rate. Demand grew for a dynamic routing protocol that could calculate the fastest route to a destination. （ ） was developed so that the shortest path through a network was calculated based on the cost of the route, taking into account bandwidth, delay and load. Therefore OSPF undertakes route cost calculation on the basis of link-cost parameters, which can be weighted by the administrator. OSPF was quickly adopted because it became known for reliably calculating routes through large and complex local area networks.As a link state routing protocol, OSPF maintains link state （ ）, which are really network topology maps, on every router on which it is implemented. The state of a given route in the network is the cost, and OSPF algorithm allows every router to calculate the cost of the routes to any given reachable destination. Unless the administrator has made a configuration, the link cost of a path connected to a router is determined by the bit rate (1 Gbit/s, 10 Gbit/s, etc) of the interface. A router interface with OSPF will then advertise its link cost to neighbouring routers through multicast, known as the hello procedure. All routers with OSPF implementation keep sending hello packets, and thus changes in the cost of their links become known to neighbouring routers. The information about the cost of a link, that is the speed of a point to point connection between two routers, is then cascaded through the network because OSPF routers advertise the information they receive from one neighbouring router to all other neighbouring routers. This process of flooding link state information through the network is known as synchronisation. Based on this information, all routers with OSPF implementation continuously update their link state databases with information about the network topology and adjust their routing tables.OSPF has become a popular dynamic routing protocol. Other commonly used dynamic routing protocols are the RIP and the Border Gateway Protocol (BGP). Today routers support at least one interior gateway protocol to advertise their routing tables within a local area network. Frequently implemented interior gateway protocols besides OSPF are RIP, IS-IS, and the proprietary Interior Gateway Routing Protocol (IGRP) by Cisco.

    A.OSPF
    B.RIP
    C.IS-IS
    D.EIGRP

    答案：B
    解析：

  • 第2题：

    When should you enable Network Address Translation Transparency (NAT-T) on the Teleworker?（）

    • A、when a router between the Teleworker router and the head-end VPN router is doing NAT/pNAT and does not support IPSec pass-through 
    • B、when the Teleworker router itself is doing NAT/pNAT
    • C、always
    • D、never

    正确答案:A

  • 第3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4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 seconds
    • B、OSPF sends triggered updates when a network change occurs
    • C、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 address
    • D、OSPF sends summaries of individual link- state entries every 30 minutes to ensure LSDB synchronization

    正确答案:B,D

  • 第5题：

    During OSPF adjacency formation, in what state is a router when it is negotiating to be in charge of the database synchronization process?（）

    • A、Init
    • B、2Way
    • C、ExStart
    • D、Exchange

    正确答案:C

  • 第6题：

    You have implemented mutua l route redistribution between OSPF and EIGRP on a border router. When checking the routing table on one of the EIGRP routers within the EIGRP routing domain, you are seeing some, but not all of the expected routes. What should you verify to troubleshoot this problem?（）

    • A、The border router is using a proper seed metric for OSPF
    • B、The border router is using a proper seed metric for EIGRP
    • C、The administrative distance is set for OSPF and EIGRP
    • D、The missing OSPF routes are present in the routing  table of the border router
    • E、The subnet keyword on the border router in the redistribute OSPF command

    正确答案:D

  • 第7题：

    During OSPF adjacency formation， what state is a router in when it is sending LSA header information to its neighbor？  （）

    • A、 Init
    • B、 2Way
    • C、 ExStart
    • D、 Exchange

    正确答案:D

  • 第8题：

    单选题
    During OSPF adjacency formation, in what state is a router when it is negotiating to be in charge of the database synchronization process?（）
    A

    Init

    B

    2Way

    C

    ExStart

    D

    Exchange


    正确答案： B
    解析： 暂无解析

  • 第9题：

    多选题
    What are the two benefits of graceful restart？（）
    A

    Graceful restart allows session information recovery without disruption to the network.

    B

    A node can perform a graceful restart to help a neighbor recover its state. The label bindings are kepton state information， which helps the failed node recover faster and does notaffect the current for wardtraffic.

    C

    Graceful restart allows a node to recover state from its neighbor when there is no RP or before thedevice undergoes SSO.

    D

    Graceful restart does not allow session information recovery.

    E

    During a graceful restart， the router removes any stale prefixes after a timer for stale entries expires


    正确答案： B,D
    解析： 暂无解析

  • 第10题：

    单选题
    According to RFC 2328, what is the stateful order in which an OSPF router transitions to a full adjacency with a neighbor router？（）
    A

    Down, Init, 2 - Way, Exstart, Exchange, Loading, and Full

    B

    Down, Init, 2 - Wa y, Exchange, Exstart, Loading, and Full

    C

    Down, 2 - Way, Init, Loading, Exstart, Exchange, and Full

    D

    Down, 2 - Way, Init, Exchange, Exstart, Loading, and Full

    E

    Down, Init, 2 - Way, Loading, Exstart, Exchange, and Full

    F

    Down, 2 - Way, Init, Exstart, Exch ange, Loading, and Full


    正确答案： A
    解析： 暂无解析

  • 第11题：

    多选题
    What are the characteristic of link state routing protocols?（）
    A

    The exchange of advertisement is triggered by a change in the network.

    B

    All routers exchange routing tables with each other iIn a multipoint network.

    C

    Packets are routed based upon the shortest path to the destination.

    D

    Paths are chosen depending on the cost efficiency factor.

    E

    Every router in an OSPF area is capable of representing the entire network topology.

    F

    Only the designated router in an OSPF area can represent the entire network topology.


    正确答案： B,A
    解析： 暂无解析

  • 第12题：

    单选题
    When should you enable Network Address Translation Transparency (NAT-T) on the Teleworker?（）
    A

    when a router between the Teleworker router and the head-end VPN router is doing NAT/pNAT and does not support IPSec pass-through 

    B

    when the Teleworker router itself is doing NAT/pNAT

    C

    always

    D

    never


    正确答案： D
    解析： 暂无解析

  • 第13题：

    According to RFC 2328, what is the stateful order in which an OSPF router transitions to a full adjacency with a neighbor router？（）

    • A、Down, Init, 2 - Way, Exstart, Exchange, Loading, and Full
    • B、Down, Init, 2 - Wa y, Exchange, Exstart, Loading, and Full
    • C、Down, 2 - Way, Init, Loading, Exstart, Exchange, and Full
    • D、Down, 2 - Way, Init, Exchange, Exstart, Loading, and Full
    • E、Down, Init, 2 - Way, Loading, Exstart, Exchange, and Full
    • F、Down, 2 - Way, Init, Exstart, Exch ange, Loading, and Full

    正确答案:A

  • 第14题：

    Which of the following data structures exist on a router for the OSPF routing protocol？（）

    • A、OSPF topology table
    • B、OSPF interface table
    • C、OSPF routing information base
    • D、OSPF link-state database
    • E、OSPF adjacency table
    • F、OSPF neighbor table

    正确答案:B,C,D,F

  • 第15题：

    What does the OSPF command capability vrf-lite achieve？（）

    • A、It enables provider edge （PE） specific checks on a router when the OSPF process is associated with the VRF
    • B、It disables provider edge （PE） specific checks on a router when the OSPF process is associated with the VRF
    • C、It enables the exchange of the "VRF-Lite" capability when the OSPF adjacency is formed.
    • D、It disables the MPLS processing on the OSPF learned routes inside the VRF

    正确答案:B

  • 第16题：

    What are the characteristic of link state routing protocols?（）

    • A、The exchange of advertisement is triggered by a change in the network.
    • B、All routers exchange routing tables with each other iIn a multipoint network.
    • C、Packets are routed based upon the shortest path to the destination.
    • D、Paths are chosen depending on the cost efficiency factor.
    • E、Every router in an OSPF area is capable of representing the entire network topology.
    • F、Only the designated router in an OSPF area can represent the entire network topology.

    正确答案:A,C,E

  • 第17题：

    Which of the following statements describe the characteristic of link state routing protocols?（）

    • A、The exchange of an advertisement is triggered by a change in the network.
    • B、All routers exchange routing tables with each other in a multipoint network.
    • C、Packets are routed based upon the shortest path to the destination.
    • D、Paths are chosen depending on the cost efficiency factor.
    • E、Every router in an OSPF area is capable of representing the entire network topology.
    • F、Only the designated router in an OSPF area can represent the entire network topology.

    正确答案:A,C,E

  • 第18题：

    What is the requirement of Remote Triggered Black Hole （RTBH ） filtering？（）

    • A、IBGP updates exchange between trigger router and black hole router
    • B、EBGP updates exchange between trigger router and black hole router
    • C、OSPF updates exchange between trigger router and black hole router
    • D、ISIS updates exchange between trigger router and black hole router

    正确答案:A

  • 第19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?（）
    A

    OSPF sends updates every 10 seconds

    B

    OSPF sends triggered updates when a network change occurs

    C

    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 address

    D

    OSPF sends summaries of individual link- state entries every 30 minutes to ensure LSDB synchronization


    正确答案： C,A
    解析： 暂无解析

  • 第20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

     Init

    B

     2Way

    C

     ExStart

    D

     Exchange


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    When a router undergoes the exchange protocol within OSPF, in what order does it pass through each state?（）
    A

    exstart state>exchange state>loading state>full state

    B

    exstart state>full state>loading state>exchange state

    C

    Loading state>exchange state>full state>exstart state

    D

    exstart state>loading state>exchange state>full state


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    What does the OSPF command capability vrf-lite achieve？（）
    A

    It enables provider edge （PE） specific checks on a router when the OSPF process is associated with the VRF

    B

    It disables provider edge （PE） specific checks on a router when the OSPF process is associated with the VRF

    C

    It enables the exchange of the VRF-Lite capability when the OSPF adjacency is formed.

    D

    It disables the MPLS processing on the OSPF learned routes inside the VRF


    正确答案： A
    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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