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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
) X# t3 H- [" }1 ^9 ?$ q, ^B. single path in and out of the network.3 J( p; f/ {7 u: O  t' d5 e% @& f
C. active/standby firewall setup) v, |6 ?$ b6 x- H; l# Z" i
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
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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.( C1 N8 e+ b4 D) u) 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 {: t  D# P/ v6 n
for example:
1 X0 e# V. U* y8 U* v* }' W6 MR1 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.
( O- e5 y! r9 z' l8 z% kThese two routers are connected to an ISP gateway router, by using BGP. This topology provides two possible outgoing and incoming paths for the traffic.9 @! Y) n1 S4 K- T
Suppose 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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