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Which three statements about the BGP next-hop attribute are true？ （）A、EBGP sessions between confederation sub ASs do not modify the next-hop attribute.B、By default， iBGP sessions change the next-hop attribute learned from eBGP peers to self address.C、By d

题目

Which three statements about the BGP next-hop attribute are true？ （）

  • A、EBGP sessions between confederation sub ASs do not modify the next-hop attribute.
  • B、By default， iBGP sessions change the next-hop attribute learned from eBGP peers to self address.
  • C、By default， the next-hop attribute is not changed when a prefix is reflected by the route reflector
  • D、EBGP sessions between confederation sub ASs change the next-hop attribute to peer address.
  • E、By default， iBGP sessions preserve the next-hop attribute learned from eBGP peers.
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相似问题和答案

第1题：

Which of the following statements is true about a router's eBGP peers that is not also true about that same router's iBGP peers?()

A. The eBGP peer neighborship uses TCP

B. The eBGP peer uses port 180 (default)

C. The eBGP peer uses the same ASN as the local router

D. The eBGP peer updates its AS_Path PA before sending updates to this router


第2题：

Which two statements are true about IBGP neighbor relationships?()

A. The BGP split - horizon rule specifies that routes learned via EBGP are never propagated to other IBGP peers.

B. The BGP split horizon rule specifies that routes learned via IBGP are never propagated to other IBGP peers.

C. A full - mesh IBGP requires that neighbor relationships be established between a ll BGP enabled routers in the autonomous system.

D. IBGP neighbors must be in different autonomous systems.

E. An EGP or static routing is required between IBGP neighbors.


参考答案：B, C

第3题：

BGP route dampening is configured on a BGP router.Whose routing behavior is affected by this configuration?()

A. upstream EBGP neighbors

B. downstream EBGP neighbors

C. upstream IBGP neighbors learned by IBGP peers

D. downstream IBGP neighbors learned by IBGP peers


参考答案：A

第4题：

Router 1 is configured for BGP as dual-homed on the Cisco network. Which three BGP attributes are carried in every BGP update on this router （both IBGP and EBGP）？（）

  • A、origin
  • B、router-ID
  • C、AS-path
  • D、local-preference
  • E、next-hop

正确答案:A,C,E

第5题：

BGP 的下一跳（next-hop）属性在EBGP 邻居之间会被更改。


正确答案:正确

第6题：

Why should iBGP sessions be fully meshed within a Transit AS?()

A. BGP requires redundant TCP sessions between iBGP peers.

B. Routes learned via eBGP are never propagated to other iBGP peers.

C. A full mesh allows for optimal routing within the Transit AS.

D. Routes learned via iBGP are never propagated to other eBGP peers.

E. Routes learned via iBGP are never propagated t o other iBGP peers.


参考答案：E

第7题：

Which of these best identifies the types of prefixes a router running BGP will advertise to an EBGP peer？ （）

  • A、 prefixes received from any other BGP peer and prefixes locally originated via networkstatements or redistributed to BGP
  • B、 all prefixes in its IP routing table
  • C、 only prefixes received from EBGP peers and prefixes locally originated via network statements or redistributed
  • D、 only prefixes received from EBGP peers and prefixes received from route reflectors
  • E、 all prefixes in its routing table except the prefixes received from other EBGP peers
  • F、 all prefixes in its routing table except the prefixes received from other IBGP peers

正确答案:A

第8题：

By default, routes learned via IBGP will be announced to which peers?()

A. IBGP peers

B. EBGP peers

C. active BGP peers

D. established BGP peers


参考答案：B

第9题：

Which types of prefixes will a router running BGP most likely advertise to an IBGP peer， assuming it is not configured as a route reflector？（）

  • A、prefixes received from any other BGP peer and prefixes locally originated via networkstatements or redistributed
  • B、all prefixes in its routing table
  • C、prefixes received from EBGP peers and prefixes locally originated via network statements or redistributed
  • D、prefixes received from EBGP peers and prefixes received from route reflectors
  • E、prefixes received from other IBGP peers， prefixes received from EBGP peers，and prefixes redistributed to BGP
  • F、prefixes received from other IBGP peers and prefixes received from route reflectors

正确答案:C

第10题：

Which of these best identifies the types of prefixes a router running BGP will advertise to an EBGP peer？（）

  • A、prefixes received from any other BGP peer and prefixes locally originated via network statements or redistributed to BGP
  • B、all prefixes in its IP routing table
  • C、only prefixes received from EBGP peers and prefixes locally originated via network statements or redistributed
  • D、only prefixes received from EBGP peers and prefixes received from route reflectors
  • E、all prefixes in its routing table except the prefixes received from other EBGP peers
  • F、all prefixes in its routing table except the prefixes received from other IBGP peers

正确答案:A

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