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Which mechanism does External BG

题目

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
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相似问题和答案

第1题：

When controlling the virtual router assignment for a PPP over ATM client, which mechanism does the router use first?()

A. profile

B. domain map

C. DHCP server

D. RADIUS server


参考答案：B

第2题：

Which CLI command enables the DHCP External Server function on an E－series router?()

A. service dhcp-external

B. set dhcp external server

C. set dhcp-external server

D. dhcp external server


参考答案：A

第3题：

A subject_____is the mechanism of that equipment.

A、which there continues to be intense debate

B、what continues to be intense debate

C、which continues to be intense debate

D、on which it continues to be intense debate


参考答案：A

第4题：

Which two statements are true about traffic shaping？（）

  • A、Out-of-profile packets are queued.
  • B、It causes TCP retransmits.
  • C、Marking/remarking is not supported.
  • D、It does not respond to BECN and ForeSight Messages.
  • E、It uses a single/two-bucket mechanism for metering.

正确答案:A,C

第5题：

An OSPF non-backbone area allows external routes to be flooded within the area. These externalroutes are propagated into other areas. However, external routes from other areas are not allowed to enter this area. Which type of OSPF area does this describe?（）

A. stub area

B. transit area

C. border area

D. not-so-stubby area


参考答案：D

第6题：

By default, which PPP mechanism does the ERX Edge Router use to monitor the session for a PPP over ATM client?()

A. ping

B. hello

C. get request

D. echo request


参考答案：D

第7题：

The ERX Edge Router in your Bridged 1483 network has multiple external DHCP servers configured.During discovery, which algorithm does the router use to decide which DHCP server to send packets to?()

A. direct mode

B. round robin

C. weighted round robin

D. No algorithm is used.


参考答案：D

第8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


参考答案：A

第9题：

Which two statements about queuing mechanisms are true？ （）

  • A、FIFO queuing is only appropriate for slower serial interfaces
  • B、weighted fair queuing is the default queuing mechanism used for all but slower than E1 rate interfaces
  • C、only one queuing mechanism type can be applied to an interface
  • D、weighted fair queuing does not require the configuration of access lists to classify traffic  
  • E、flow-based weighted fair queuing provides for queues to be serviced in a round-robin fashion

正确答案:C,D

第10题：

Which mechanism does OSPFv3 use when the router LSA is too big to be sent out？（）

  • A、It relies on IPv6 to do the fragmenting.
  • B、It splits the LS Update packet into smaller packets.
  • C、It splits the LSA into smaller router LSA packets.
  • D、It produces an error.

正确答案:C

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