作业帮一条ACL配置问题refer to the exhibit .what will happen to HTTP traffic coming from the internet that is destined for 172.16.12.10 if the traffic is proccessed by this ACL.下面为信息-----------------------------------------------------------
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/04 06:04:57
一条ACL配置问题
refer to the exhibit .what will happen to HTTP traffic coming from the internet that is
destined for 172.16.12.10 if the traffic is proccessed by this ACL.
下面为信息
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router#show access -lists
Extended IP access list 100
\x0510 deny tcp 172.16.0.0 0.0.255.255 any eq telnet
\x0520 deny tcp 172.16.0.0 0.0.255.255 any eq smtp
\x0530 deny tcp 172.16.0.0 0.0.255.255 any eq http
\x0540permit tcp 172.16.0.0 0.0.255.255 any
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A:traffic will be dropped per line 30 of the ACL
B:traffic will be accepted per line 40 of the ACL
C:traffic will be dropped ,because of the implicit deny all at the end of the ACL
D:traffic will be accepted ,because the source address is not covered by the ACL
题库给的答案是C
但是 30 deny tcp 172.16.0.0 0.0.255.255 any eq http 不是 已经说明 172.16.0.0/16 整个网段都
不允许么?
那么是选A 还是C
题目要求是去往172.16.0.0网络的,而访问列表都是从172.16.0.0去往别的网段的,所以按顺序匹配都不符合,但是匹配隐含的deny any any,所以选C