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初级工程师
  
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目前有三道题,不知道该怎么选,求指教~~~~
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+ E3 r4 ]1 {/ s6 A一:
- ]" K" F/ k/ e5 tIn which two modes do IPv6-in-IPv4 tunnels operate? (Choose two.)
8 t2 b9 a8 g& x) O$ cA. tunnel mode8 e# {4 e, Q3 M: w7 j4 u; z/ [0 B
B. transport mode
: a! P3 k* w) Q0 \C. 6to4 mode' _+ {' d5 ?- ~
D. 4to6 mode& t" R) \1 I* y |
E. ISATAP mode
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8 G5 a+ m O F' jQ986 Q1096这道题选AB Q50里面选CE
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二:- ]# d6 J( R5 K, U, ]+ u! U0 X
还有这道:; _( |6 Y) Z, L7 U) ~
Which statement about NAT64 is true?' U2 c2 A0 Q# z; ^: @; U- c% @
A. NAT64 provides address family translation and translates IPv4 to IPv6 and
+ a- S# W' S4 O( _; sIPv6 to IPv4.8 b* `; Q. V' [9 W' c' @) w3 r+ r
B. NAT64 provides address family translation and can translate only IPv6 to
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C. NAT64 should be considered as a permanent solution.
% t6 X4 H8 N: c# uD. NAT64 requires the use of DNS64
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有的题库选A,有的选B ,能看懂的同学,给详细解释一下吧
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还有一道Q22里面的题:5 d$ B# k; m j6 ^- i3 v
what are two requirements for NSF operation in an MPLS L3 VPN?
7 D: S; E) e2 OA.SSO must be active
' w. K4 W/ B3 `, iB.Graceful restart must be configured in BGP/ r- b) o9 {' D
C.Stateful HA must be deployed5 M# ]- O. t: O+ J* q4 j! V
D.ISSU must be active1 I' P! f- k1 U6 [4 G
E.The NSF must bve configured for Layer 2 traffic
# z" x( j" ?9 jF.Graceful restart must be configured in LDP% Z `$ K/ r9 m; ~9 g4 l( V
G. V, y3 l4 ]这道题Q1069里面选AD Q22里面选的是BF
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