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多选题In which two ways does the BGP graceful capability preserve prefix information during a restart？（）AThe peer router immediately removes the BGP routers that it learned from the restarting router from itsBGP routing tables.BThe router establishes BGP ses

题目
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.

参考答案和解析
正确答案： A,C
解析： 暂无解析
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相似问题和答案

第1题：

Refer to the exhibit. Which of the following statements is true? ()

A. BGP NSF awareness is enabled

B. SSO for BGP NSF capability is enabled

C. BGP graceful restart awareness is enabled

D. 10.11.1.187 is configured as an NSF-capable BGP neighbor


参考答案：A

第2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3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


参考答案：B

第4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5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6题：

In which of the following BGP-related events is an End-of-RIB （EOR） message sent？（）

  • A、Following a link flap in the BGP speaker’s AS
  • B、During initial convergence.
  • C、Following a Route Processor Switchover.
  • D、Just before sending a CEASE message to tear down the session.
  • E、During capability negotiation

正确答案:B,C

第7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8题：

In which two ways do TANDBERG and Cisco TelePresence solutions interoperate? ()

A.gated

B.integrated

C.bridged

D.converted

E.spanned


参考答案：B, C

第9题：

Which mechanism does External BGP use to prevent the formation of routing loops?（）

  • A、AS path
  • B、Split horizon
  • C、Poison reverse
  • D、Unicast RPF check

正确答案:A

第10题：

Which two options does Cisco PfR use to control the entrance link selection with inbound  optimization？（）

  • A、Prepend extra AS hops to the BGP prefix.
  • B、Advertise more specific BGP prefixes（longer mask）.
  • C、Add（prepend）one or more communities to the prefix that is advertised by BGP.
  • D、Have BGP dampen the prefix.

正确答案:A,C

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