300-101 几道选择题答案不确定

爱一一

请问各位大侠一下几道题到底选什么？题库给的答案不一致。
QUESTION 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
; U9 ^% {  Y/ j* v/ i+ `) Ivia its header, in order to filter future attacks? (Choose three.)
A. Traffic Class
B. Source address
; a) e" ~# a( V3 Z$ \+ RC. Flow Label
! \7 T7 T% E. pD. Hop Limit
$ b9 U* F& s9 A( F0 y; iE. Destination Address
F. Fragment Offset
0 D, `: W& `* V& [' @. Z
& F% }( C$ X% T( V. o0 Z是选ACD, 还是选BCE

QUESTION 138
Other than a working EIGRP configuration, which option must be the same on all routers
for EIGRP authentication key rolleover to work correctly?
A. SMTP
B. SNMP
* ?+ X) M- a% N: k- a1 M, X( A9 CC. Passwords
D. Time

+ s0 c4 {/ I: `! ~选D还是c？
6 L' h, G& @( d3 F9 l, e% n4 q
QUESTION 425
9 q2 J1 `, P' L! `8 i  VWhat is the minimum log level for the event generated when an ACL drops a packet?
  k5 u& l$ d% y/ n3 sA. 3
% y1 E9 b& K( {, o( Z! fB. 4
C. 5
' W  C6 y9 u( R2 Q$ A0 I. o* _' [D. 6
# u: H& W# [& _4 u4 NE. 7
, R! j2 z; S0 y. \3 `3 O+ k
选E？

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