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初级工程师
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楼主 |
发表于 2015-8-7 22:43:49
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4 N' O' |4 _* M% ?; U0 }6 d3 JThe enterprise network WAN link has been receiving 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.)
8 `: @( m2 }# V# T. ?1 R; W8 i0 N; i我认为选Source address,Hop Limit,Flow Labe,个人认为ipv6地址太够用了,所以可以认为有唯一性,用来防ddos,其他两个选项和题库一样' \3 z a! [3 B: W$ q
光这一题我错了不会扣58分,所以觉得下面两题存在争议
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+ v* O3 q1 j4 @ F- zWhich technology was originally developed for routers to handle fragmentation in the path between end points?6 k6 O( w, s1 }
我认为选mss,但是考试时候我和题库一样选pmtud,题目强调originally,可以理解为最初、早先时候 ,所以我认为mss的可能更大,因为mss是老早tcp的一个位,之后才有的pmtud
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2 s3 r1 j9 Q6 u& L* L, P: J, CIf IPv6 is configured with default settings on all interfaces on the router, which two dynamic IPv6 addressing mechanisms could you use on end hosts to provide end-to-end connectivity? (Choose two.) P1 f" J3 _$ p" ~# D
我认为选DHCPv6和 SLAAC,但是考试我按题库选的slaac和ei64,我总觉得ei64不能算是dynamic IPv6 addressing mechanisms
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2015-8-7 22:43:49
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