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[其他] Router 300-101 問題求解

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发表于 2018-7-7 15:46:42 | 显示全部楼层 |阅读模式
In which scenario canasymmetric routing occur?
A. active/active firewall setup
  C8 [5 j9 q. y+ jB. single path in and out of the network.
/ ?& T% A: d7 j8 {0 T3 y( M  RC. active/standby firewall setup
5 C0 ?. J0 }9 G. ?D. redundant routers running VRRP
Correct Answer: D

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請問這題答案 0329 是答案A
                    0509 是D
, [) ~# O7 P  D: C
能請問各位這題正確答案嗎??

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发表于 2018-7-7 15:58:56 | 显示全部楼层
国外论坛也在讨论这道题,给出的答案是D.$ S7 F( C& _4 c. W
Asymmetric routing is the scenario in which outing packet is through a path, returning packet is through another path. VRRP can cause asymmetric routing occur,9 R  X# M" r" ^( P$ {; `; `, W
for example:! m  j/ g7 w, Q4 T& Z8 M3 W
R1 and R2 are the two routers in the local internal LAN network that are running VRRP. R1 is the master router and R2 is the backup router.; @& s# V9 {$ m" M' D% P& j
These two routers are connected to an ISP gateway router, by using BGP. This topology provides two possible outgoing and incoming paths for the traffic.
, p$ G. D9 Q* z7 \3 l2 {/ ISuppose the outgoing traffic is sent through R1 but VRRP failover occurs, R2 becomes the new master router -> traffic passing through R2 instead ->asymmetric routing occurs.
沙发 2018-7-7 15:58:56 回复 收起回复
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发表于 2018-7-7 19:41:51 | 显示全部楼层
感謝分享,0627的答案也是A
地板 2018-7-7 19:41:51 回复 收起回复
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发表于 2018-7-8 21:05:33 | 显示全部楼层
thanks for share
6# 2018-7-8 21:05:33 回复 收起回复
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