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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
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3 A7 A* B/ M7 h: n2 U' g11. Which statements are true about GRE tunnels?
! X+ ~1 [8 h* u% m7 f) _a. The original packet is encapsulated in a GRE header only.; E/ B; j- D* @. ~" v t8 V: M8 C
b. The original packet is encapsulated in a GRE header, and then a new IP header is
5 \2 L. u# c0 d7 C& b Uadded.
. q3 ]; b6 {- B# K0 D7 }: Pc. The original packet is encapsulated in an IP header, and then a GRE header is" L) L7 }- t1 T3 B; t [5 U
added.7 |" F0 Q# [5 {( P# b" l) |2 Q
d. The original packet header is rewritten by the GRE header. G+ x1 G$ q: r3 \
答案是B
' z1 T1 A7 ?/ X9 r* r% a12. When creating a virtual tunnel interface, what is the default tunnel mode?4 o3 @! W. t5 r6 ~: J& s2 n$ a
a. GRE/IP2 |2 o/ Q# G9 G- d. {1 e. Z
b. GRE/IPv60 ~# P* y: ]; G% Q
c. IPv6/IP5 \% ?9 }9 X3 t* c- x/ t$ G
d. GRE/Multipoint% ~( ]8 Z% F6 ?! P. r" y2 @, j
答案是A6 W. Z* _: P& @# z1 @
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我認為GRE/IP為by default,GRE encapsulate original packet,加上new IP header是正確的,
3 y" H! [% e7 n4 d9 }9 d所以選BC應該沒錯 |
22#
2018-12-4 17:35:04
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