关于选项D。。。

sinkevin · 发表于 2012-8-3 10:57:19

QUESTION 261
Refer to the graphic. Host 1 cannot receive packets from Host 2. Assuming that RIP v1 is the routing
protocol in use, what is wrong with the IP configuration information shown? (Choose two.)

A. The fa0/1 interface of router R2 has been assigned a broadcast address.
B. The fa0/1 network on router R2 overlaps with the LAN attached to R1.
C. Host 2 has been assigned the incorrect subnet mask.
D. Host 1 has been configured with the 255.255.248.0 subnet mask.
E. Host 2 on router R2 is on a different subnet than its gateway.

如果host1的掩码改成248，网关也改成/21也是正确的吧？就是没有修改host1网关的选项才选的B、C对吧？为什么答案解释说选项D和给出的信息不符？还有就是把B、C的配置修改正确也不能正常通信吧，还得改成RIPv2然后no auto才行啊！

zhang0310 · 发表于 2012-8-3 11:48:33

D所给出的网关不对，它说host1可以接收来自host2的包，所以B是对的，C说host2的网关不对，答案也正确……

sinkevin · 发表于 2012-8-3 12:15:32

host1可以接收来自host2的包？？从什么地方看出来的？？
D给的子网掩码可用的IP范围是10.1.32.1-10.1.39.255，网关和主机IP都在里面，只要把网关掩码一改就对了么？

aleser · 发表于 2012-8-3 13:26:48

weicisco · 发表于 2012-8-3 13:30:20

sinkevin · 发表于 2012-8-4 10:40:18

刷分的人比帮忙解答的人还多。。。。

10467106 · 发表于 2012-8-5 23:55:53

发个帖顶一下先........！

zhangsixian7 · 发表于 2013-5-18 03:10:26

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[已解决] 关于选项D。。。

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