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助理工程师
 
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发表于 2018-12-4 17:35:04
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在300-135 offical cert guide,有兩題* @1 z1 @ A% W3 o5 ]& u
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11. Which statements are true about GRE tunnels?' @" _) l- @; s! g1 f
a. The original packet is encapsulated in a GRE header only.1 N9 \$ s. M, \; R" B( m9 v
b. The original packet is encapsulated in a GRE header, and then a new IP header is s( ~0 k, t0 e5 C' P2 E
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c. The original packet is encapsulated in an IP header, and then a GRE header is2 X B1 P3 v7 ], D( ?5 ` H, J
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d. The original packet header is rewritten by the GRE header.
$ ]' Q; _! M; \答案是B
; z7 a' b% {+ G- d5 e0 Z( d& B12. When creating a virtual tunnel interface, what is the default tunnel mode?" @8 K" }$ U- A# a D
a. GRE/IP
- i8 d5 b; c5 c# sb. GRE/IPv6
2 f0 K8 \4 Q9 p; P! Z+ Pc. IPv6/IP) m2 t& v4 ]% Z! d
d. GRE/Multipoint
6 r3 m: u" |1 k答案是A1 U# }7 t1 v) n) p* j5 Y# D( ~
+ a* A# k! ~5 O$ j4 i7 c我認為GRE/IP為by default,GRE encapsulate original packet,加上new IP header是正確的,
- w/ Z3 T4 P1 a% d所以選BC應該沒錯 |
22#
2018-12-4 17:35:04
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