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What is the BGP synchronization rule？（）

题目
单选题
What is the BGP synchronization rule？（）
A

Routing information received through an IBGP session is not forwarded to another IBGP neighbor， onlyto EBGP neighbors

B

Routing information received through an EBGP session is not forwarded to another EBGP neighbor，only to IBGP neighbors

C

BGP neighbor peerings are established and sychronized using the TCP 3-way handshake

D

BGP shall not advertise a route until that route has been learned via an IGP also

参考答案和解析
正确答案： A
解析： 暂无解析
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相似问题和答案

第1题：

What is the most likely reason that an IBGP route that has been selected as a best route is not entered into the IP routing table?（）

  • A、Route reflectors are not passing updates properly.
  • B、BGP synchronization has been enabled.
  • C、The next-hop address is unreachable.
  • D、No loopback interface has been configured on a router.

正确答案:B

第2题：

What best explains the BGP route-reflector function？（）

  • A、BGP route-reflector should be in forwarding path of data coming from its clients
  • B、BGP route-reflector does not have to be in the forwarding path of data coming from its clients
  • C、BGP route-reflector will stop reflecting the routes if they’re not directly-connected clients
  • D、None of the above

正确答案:B

第3题：

During OSPF adjacency formation, in what state is a router when it is negotiating to be in charge of the database synchronization process?()

A. Init

B. 2Way

C. ExStart

D. Exchange


参考答案：C

第4题：

What are two default routing policies on Junos devices?（）

  • A、The BGP import policy accepts all BGP routes.
  • B、The BGP export policy rejects all active BGP routes.
  • C、The OSPF import policy accepts all OSPF routes.
  • D、The OSPF export policy accepts all active OSPF routes.

正确答案:A,C

第5题：

In BGP routing，what does the rule of synchronization mean？（）

  • A、A BGP router can only advertise an EBGP learned route，provided that the route is an IGP route in the routing table.
  • B、A BGP router can only advertise an IBGP learned route，provided that the route is an IGP route in the routing table.
  • C、A BGP router can only advertise an IBGP learned route，provided that the route is an IGP route that is not in the routing table.
  • D、A BGP router can only advertise an EBGP learned route，provided that the route is a metric of 0 in the BGP table.

正确答案:B

第6题：

Which option is true regarding the synchronization rule ?（）

  • A、Do not use or internally advertise a route until the route is lear ned from a source other than BGP.
  • B、Do not use or advertise a route until the route is learned from a BGP peer.
  • C、Do not use or advertise routes marked PARTIAL.
  • D、Wait until a CONFIRM message is received before using routes from BGP neighbors.

正确答案:A

第7题：

What is BGP synchronization？


正确答案: The rule of synchronization states the following：
Before a route learned from an IBGP neighbor is entered into the IP routing table or is advertised to a BGP peer， the route must first be known via IGP.

第8题：

There is no specific rule__________what we should wear to a dinner party.

A.because of
B.as to
C.as of
D.but for

答案：B
解析：
【考情点拨】考查词组词义辨析。【应试指导】句意：至于出席宴会我们应该穿什么样的服装并没有具体的规定。because of因为；as t0关于，至于；as of从……开始；but for若不是。

第9题：

During OSPF adjacency formation, in what state is a router when it is negotiating to be in charge of the database synchronization process?（）

  • A、Init
  • B、2Way
  • C、ExStart
  • D、Exchange

正确答案:C

第10题：

Which three conditions can cause BGP n eighbor establishment to fail?（）

  • A、The IBGP neighbor is not directly connected.
  • B、BGP synchronization is enabled in a transit autonomous system with fully - meshed IBGP neighbors.
  • C、The EBGP neighbor ebgp - multihop option is set to the de fault value.
  • D、The BGP update interval is different between the two BGP neighbors.
  • E、The BGP neighbor is referencing an incorrect autonomous system number in its neighbor statement.
  • F、There is an access list blocking all TCP traffic between the two  BGP neighbors.

正确答案:C,E,F

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