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az3539 · 发表于 2017-7-8 21:57:32

CCNP300-101

117.The enterprise network WAN link has been receiving several denial of service attacks from
both IPv4 and IPv6 sources. Which three elements can you use to identify an IPv6 packet
via its header, in order to filter future attacks? (Choose three.)
A. Traffic Class
B. Source address
C. Flow Label
D. Hop Limit
E. Destination Address
F. Fragment Offset

请问这道题是ACE还是BCE？为什么？

Q9966 · 发表于 2017-7-12 11:05:13

这个问题基本上是要区分IPV4和IPV6数据包。您可以简单地比较这两种类型协议的头文件来获得答案：

az3539 · 发表于 2017-7-23 15:36:45

好的谢谢明白了是traffic calss flow label hop limit

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