In BGP graceful restart, how does a peer router indicate the end of a route exchange?()A、an open message with the E bit setB、an update message with the E bit setC、an open message with an end-of-RIB markerD、an update message with an end-of-RIB marker

题目

In BGP graceful restart, how does a peer router indicate the end of a route exchange?()

  • A、an open message with the E bit set
  • B、an update message with the E bit set
  • C、an open message with an end-of-RIB marker
  • D、an update message with an end-of-RIB marker

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参考答案和解析
正确答案:D
更多“In BGP graceful restart, how doe”相关问题
  • 第1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:A,B

  • 第2题:

    Which graceful restart parameter is negotiated during BGP session establishment?()

    • A、Grace-time
    • B、Restart-time
    • C、Stale-routes-time
    • D、Restart-update-time

    正确答案:B

  • 第3题:

    The OSPF RFC 3623 Graceful Restart feature allows you to configure IETF NSF in ultivendor networks. When using OSPF Graceful Restart,which mechanism is used tocontinue forwarding packets during a switchover?()

    • A、Reverse Path Forwarding
    • B、Hardware-based forwarding
    • C、UDP forwarding
    • D、Layer 2 Forwarding

    正确答案:B

  • 第4题:

    BGP协议为了支持GR,做了如下扩展()。

    • A、在BGP的OPEN消息中,增加了一种表示GR的能力,称为Graceful Restart Capability。这种能力被BGP用来向邻居表示其支持Graceful restart的能力
    • B、在Keepalive报文中增加TLV211表明路由器发生了重启
    • C、定义了两个重要的定时器:Restart timer和Wait-For-EOR timer
    • D、在Update报文中,新增加一个EOR(End-of-RIB)标志,用于表明路由信息向邻居更新完毕

    正确答案:A,C,D

  • 第5题:

    In BGP graceful restart, how does a peer router indicate the end of a route exchange?()

    • A、An open message with the E bit set.
    • B、An update message with the E bit set.
    • C、An open message with an end-of-RIB marker.
    • D、An update message with an end-of-RIB marker.

    正确答案:D

  • 第6题:

    多选题
    In which two ways does the BGP graceful capability preserve prefix information during a restart?()
    A

    The peer router immediately removes the BGP routers that it learned from the restarting router from itsBGP routing tables.

    B

    The router establishes BGP sessions with other routers and relearns the BGP routes from others that are also capable of graceful restart. The restarting router waits to receive updates from the neighboringrouters. When the neighboring routers send end-of-RIB messages to indicate that they are donesending updates,the restarting router starts sending its own updates.

    C

    The peer router sends an end-of-RIB message to the restarting router.

    D

    The restarting router removes any stale prefixes after the timer for stale entries expires.

    E

    The restarting router does not remove any stale prefixes after the timer for stale entries expires.


    正确答案: A,C
    解析: 暂无解析

  • 第7题:

    单选题
    Which graceful restart parameter is negotiated during BGP session establishment?()
    A

    Grace-time

    B

    Restart-time

    C

    Stale-routes-time

    D

    Restart-update-time


    正确答案: C
    解析: 暂无解析

  • 第8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9题:

    多选题
    BGP协议为了支持GR,做了如下扩展()。
    A

    在BGP的OPEN消息中,增加了一种表示GR的能力,称为Graceful Restart Capability。这种能力被BGP用来向邻居表示其支持Graceful restart的能力

    B

    在Keepalive报文中增加TLV211表明路由器发生了重启

    C

    定义了两个重要的定时器:Restart timer和Wait-For-EOR timer

    D

    在Update报文中,新增加一个EOR(End-of-RIB)标志,用于表明路由信息向邻居更新完毕


    正确答案: C,B
    解析: 暂无解析

  • 第10题:

    多选题
    Which pre-conditions must be met before an OSPF router can perform graceful restart?()
    A

    Router must be ABR

    B

    Router must contain one sham link.

    C

    The network topology must be stable.

    D

    Router must be able to forward packets.

    E

    Neighbors must support graceful restart.


    正确答案: C,D
    解析: 暂无解析

  • 第11题:

    判断题
    GR(graceful restart)可以实现所有协议重启时数据转发不中断的效果。
    A

    B


    正确答案:
    解析: 暂无解析

  • 第12题:

    多选题
    S9300支持的三层特性以下说法正确的是()。
    A

    支持OSPF graceful restart

    B

    支持ISIS graceful restart

    C

    支持BGP graceful restart

    D

    不支持BGP graceful restart


    正确答案: B,A
    解析: 暂无解析

  • 第13题:

    Which two features must be configured to perform AToM NSF?()

    • A、FRR
    • B、SSO
    • C、distribute CEF
    • D、switch virtual path
    • E、graceful restart

    正确答案:B,E

  • 第14题:

    S9300支持的三层特性以下说法正确的是()。

    • A、支持OSPF graceful restart
    • B、支持ISIS graceful restart
    • C、支持BGP graceful restart
    • D、不支持BGP graceful restart

    正确答案:A,B,C

  • 第15题:

    In which two ways does the BGP graceful capability preserve prefix information during a restart?()

    • A、The peer router immediately removes the BGP routers that it learned from the restarting router from itsBGP routing tables.
    • B、The router establishes BGP sessions with other routers and relearns the BGP routes from others that are also capable of graceful restart. The restarting router waits to receive updates from the neighboringrouters. When the neighboring routers send end-of-RIB messages to indicate that they are donesending updates,the restarting router starts sending its own updates.
    • C、The peer router sends an end-of-RIB message to the restarting router.
    • D、The restarting router removes any stale prefixes after the timer for stale entries expires.
    • E、The restarting router does not remove any stale prefixes after the timer for stale entries expires.

    正确答案:B,D

  • 第16题:

    A cluster node has a failed fibre adapter requiring the node to be halted to replace it. To minimize downtime, what is the appropriate method of performing this repair?()

    • A、 Perform the cIRGmove command to move the node’s resources to another cluster node.
    • B、 Perform a graceful stop of the cluster,replace the adapter,and restart the cluster.
    • C、 Perform a force stop of the cluster node,replace the adapter,and restart the cluster. 
    • D、 Perform a graceful takeover of the cluster,replace the adapter,and restart the cluster.

    正确答案:D

  • 第17题:

    判断题
    S7800系列交换机支持Graceful restart。
    A

    B


    正确答案:
    解析: 暂无解析

  • 第18题:

    多选题
    In which two ways does the BGP graceful restart capability preserve prefix information during a restart?()
    A

    The peer router sends an end-of RIB message to the restarting router

    B

    The peer router immediately removes the BGP routes that it learned from the restarting router from its BGP routing table

    C

    The restarting router does not remove any stale prefixes after the timer for stale entries expires

    D

    The router establishes BGP sessions with other routers and relearns the BGP routes from other routers that are also capable of graceful restart. The restarting router waits to receive updates from the neighboring routers. When the neighboring routers send end-of-RIB messages to indicate that they are done sending updates, the restarting router starts sending its own updates

    E

    The restarting router removes any stale prefixes after the timer for stale entries expires


    正确答案: A,D
    解析: 暂无解析

  • 第19题:

    单选题
    In BGP graceful restart, how does a peer router indicate the end of a route exchange?()
    A

    an open message with the E bit set

    B

    an update message with the E bit set

    C

    an open message with an end-of-RIB marker

    D

    an update message with an end-of-RIB marker


    正确答案: A
    解析: 暂无解析

  • 第20题:

    单选题
    In BGP graceful restart, how does a peer router indicate the end of a route exchange?()
    A

    An open message with the E bit set.

    B

    An update message with the E bit set.

    C

    An open message with an end-of-RIB marker.

    D

    An update message with an end-of-RIB marker.


    正确答案: A
    解析: 暂无解析

  • 第21题:

    多选题
    Which three pre-conditions must be met before an OSPF router can perform graceful restart? ()
    A

    Router must be an ABR.

    B

    Router must contain one sham link.

    C

    The network topology must be stable.

    D

    Router must be able to forward packets.

    E

    Neighbors must support graceful restart.


    正确答案: C,A
    解析: 暂无解析

  • 第22题:

    单选题
    In IS-IS, how does the restarting router inform its helpers that a restarts event occurred?()
    A

    Sending out a graceful restart PDU

    B

    Sending an LSP that contains no TLVs.

    C

    Sending out a restarts TLV with the RR bit set.

    D

    Reflooding its LSP with a maximum sequence number.


    正确答案: C
    解析: 暂无解析

  • 第23题:

    多选题
    Which three pre-conditions must be met before an OSPF router can perform graceful restart?()
    A

    Router must be ABR

    B

    Router must contain one sham link.

    C

    The network topology must be stable.

    D

    Router must be able to forward packets.

    E

    Neighbors must support graceful restart.


    正确答案: B,E
    解析: 暂无解析