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When BGP is used as the PE-CE r

题目

When BGP is used as the PE-CE routing protocol, which of these statements is correct?（）

  • A、On the CE router, PE neighbors must be configured in the VRF context on the CE router
  • B、On PE routers, the CE IBGP neighbors are configured in the global BGP configuration
  • C、On PE routers, the CE EBGP neighbors are configured in the VRF context
  • D、A separate BGP process must be used on the PE routers for CE routers so that they do not use the same BGP routing process as that used for the PE router's other provider neighbors
参考答案和解析
正确答案:C
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相似问题和答案

第1题：

When the BGP path selection process is being performed on a Cisco router, which BGP attribute is used first when determining the best path?()

A. local preference

B. MED

C. weight

D. or igin

E. next - hop

F. AS - path


参考答案：C

第2题：

BGP runs over a reliable transport （ ）. This eliminates the need to implement explicit update fragmentation, retransmission, acknowledgement, and （请作答此空）. Any authentication scheme used by the transport protocol may be used in addition to BGP's own （ ）mechanisms. The error notification mechanism used in BGP （ ）that the transport protocol supports a “graceful” close, i.e., that all outstanding data will be delivered （ ）the connection is closed.

A.synchronization
B.conflict
C.transport
D.sequencing

答案：D
解析：
bgp通过可靠的传输协议运行。这样就不需要实现显式的更新分段、重新传输，确认和排序。使用的任何身份验证方案除了bgp自己的身份验证机制之外，还可以使用传输协议的验证方案。bgp中采用的错误通知机制，假定传输协议支持“正常”关闭，也就是说，所有未完成的数据将在连接关闭之前交付。

第3题：

When implementing BGP confederations, which configuration command establishes the globally unique AS number used with external peers outside your network?()

A. bgp confederation as

B. bgp confederation system

C. bgp confederation remote-as

D. bgp confederation identifier


参考答案：D

第4题：

When the BGP path selection process is being performed on a Cisco router, which BGP attribute is used first when determining the best path?（）

  • A、local preference
  • B、MED
  • C、weight
  • D、or igin
  • E、next - hop
  • F、AS - path

正确答案:C

第5题：

Which BGP attribute is used by BGP to prevent routing loops?（）

  • A、AS - path
  • B、next - hop
  • C、MED
  • D、weight
  • E、local preference
  • F、origin

正确答案:A

第6题：

Refer to the exhibit. On the basis of the configuration that is provided, how would the BGP updates that come from router R1 be replicated inside autonomous system 65200?()

A. All BGP updates that are received on router R 2 will be sent to routers R3 and R4. Routers R3 and R4 will then forward those BGP updates to router R5

B. None of the BGP updates that are received on router R2 will ever be received by router R5

C. All BGP updates that are received on router R2 will not be sent to routers R3 and R4

D. All BGP updates that are received on router R2 will be sent directly to router R5


参考答案：B

第7题：

When implementing MPLS VPNs between CE and PE routers, which of these statements is correct? As a Network Engineer, it is necessary for you to know how to implement MPLS VPNs between Customer Edge and Provider Edge routers. Refer to the following descriptions, which one is making sense?（）

  • A、If using OSPF or EIGRP as the PE-CE routing protocol, redistribution is not required, but any other protocol or static route will require redistribution
  • B、If using IS-IS as the PE-CE routing protocol, no redistribution is required
  • C、If using static routes between the CE and PE routers, no redistribution of other VPN routes is required
  • D、If PE-CE protocol is not BGP, redistribution of other VPN routes from MP-BGP is required

正确答案:D

第8题：

Which BGP feature shou ld be used to avoid high memory utilization on a router?()

A. soft - reconfiguration

B. route refresh

C. BGP communities

D. full - mesh BGP peering


参考答案：B

第9题：

Which BGP community is used to prevent the advertisement of the BGP prefix to other BGP peers？（）

  • A、additive
  • B、none
  • C、no-export
  • D、no-advertise
  • E、local-as

正确答案:D

第10题：

When implementing MPLS VPNs between CE and PE routers, which of these statements is correct? （）

  • A、If using IS-IS as the PE-CE routing protocol, no redistribution is required.
  • B、If using static routes between the CE and PE routers, no redistribution of other VPN routes is required.
  • C、If the PE-CE protocol is not BGP, redistribution of other VPN routes from MP-BGP is required.
  • D、If RIP is the routing protocol that is used between the PE-CE routers, no redistribution is required, but any other protocol will require redistribution.
  • E、If using OSPF or EIGRP as the PE-CE routing protocol, redistribution is not required, but any other protocol or static route will require redistribution.

正确答案:C

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