上海10.14 902 988分飘过
本帖最后由 zxywstc 于 2012-10-15 21:06 编辑跟上次考813一样 还是同样的考场 同样的位置。准备了两个月之多,中间电脑主板坏了,又是修主板,后来又坏了,直接换电脑,耽搁了不少时间,不然一个多月也差不多了。现在就剩下832一门了,争取两个星期解决掉。废话不多说,下面进入主题。
9.13更新的题库全覆盖。题库有好几题错误的。相信前面也有人讲过了,如果没看到的,我这边也重复一下。
1、Q38题EIGRP中配置variance实现不等价负载均衡,我查了很多资料,也没发现feasible'FD=2*Success'FD能实现不等价负载均衡,所以真实答案是2,但是考试的时候还是要选3,因为标准答案就是3条,这次也考到了;
2、Q91题的答案也是有问题的,应该选BD,因为要影响AS200到10.10.1.32/28的流量到AS100从下面一条走,所以在RA中配置route-map,将10.10.1.32/28这条路由通告出去时metric赋值150,因为metric默认100,越小越优先,这样AS200过来的流量就会走下面这条path;
这次错的题是IPv6的,暂时没查到错的是哪一道,可能是我疏忽了。还有一题是R2 only的题目,题库Q316,是没有图的,题目给出的图是一个拓扑表格,三条路由的FD/AD分别是R2 40/20,R3 60/40,R4 80/60,说哪一个会是最优路由,因为配置了variance=2,这里可以佐证我上面讲的,feasible'FD=2*Success'FD这个是错误的,所以选择R2 only.这个也考到了。
实验五道全考,只有OSPF可以保存,重分布R2 R3是以太网连接,所以要配置distance。做OSPF的virtual-link的实验时,碰到一个情况,就是从R4 ping R1的loopback地址可以通,但是从R1 ping R4 却不通,不知道是做个限制还是什么,不过这个也没关系,没什么影响。
PS: 902有任何问题也可以联系我,QQ249826983,欢迎探讨,共同进步。
附题目:
QUESTION 38
Refer to the exhibit. ROUTE.com has just implemented this EIGRP network. A network administrator came
to you for advice while trying to implement load balancing across part of their EIGRP network.
If the variance value is configured as 2 on all routers and all other metric and K values are configured to
their default values, traffic from the Internet to the data center will be load balanced across how many
paths?
A. 1
B. 2
C. 3
D. 4
E. 5
Answer: C
Section: EIGRP
QUESTION 91
Refer to the exhibit. Currently the two eBGP links between AS100 and AS200 have an average inbound
load of 65% and 20% respectively. After further investigation, traffic to 10.10.1.16/28 accounts for 45%,
and traffic to 10.10.1.32/28 and to 10.10.1.48/28 each account for 20% of the inbound load. The BGP
attributes are currently set at their default values in both autonomous systems.
If you want to influence how AS200 sends traffic to AS100, which eBGP configurations would you configure
in AS100 to influence AS200 to use the eBGP links more evenly? (Choose two.)
更正下错误,Q38是在RA上配置route-map,metric是越小越优先,10.10.1.32/28这条路由,上面metric150,下面100,则AS200到10.10.1.32/28就从下面走了。 {:6_267:}{:6_267:} zxywstc 发表于 2012-10-15 20:47 static/image/common/back.gif
更正下错误,Q38是在RA上配置route-map,metric是越小越优先,10.10.1.32/28这条路由,上面metric150,下面 ...
所以答案還是BC ??
billpitt 发表于 2012-10-15 20:51 static/image/common/back.gif
所以答案還是BC ??
不是,是10.10.1.32这条路由,所以答案还是BD 啥也不说了,楼主就是给力! 发的有点冲忙,Q38考试的时候应该选3条的。{:soso_e127:} {:6_267:} {:6_290:}{:6_290:} {:6_299:}{:6_299:} {:6_299:}{:6_290:}{:6_299:} {:6_267:} {:6_289:} {:6_290:}{:6_290:} BGP那题目应该选BC,我在考试的时候就是选BC,满分的。虽然我认为BC不太对,应该要把20%的两个子网都分到下面一条路去。
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