【2018.12.03】CCNP排错（300-135）题库V2.0

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jiashanpeng 发表于 2018-12-3 18:56
确实，这道题，两个版本答案不一样，期待乔帮主解决。

在300-135 offical cert guide，有兩題
* @2 B. T/ ~1 x2 p
11. Which statements are true about GRE tunnels?
. l( k3 E$ M/ D- t3 na. The original packet is encapsulated in a GRE header only.
8 a1 ?/ \; [, @9 Y$ T' z" _b. The original packet is encapsulated in a GRE header, and then a new IP header is
added.
c. The original packet is encapsulated in an IP header, and then a GRE header is
7 B' q" ?! d& U# H0 `( h) Gadded.
: g  g5 P8 g- p8 L& S! F$ Gd. The original packet header is rewritten by the GRE header.
答案是B
12. When creating a virtual tunnel interface, what is the default tunnel mode?
9 }3 Z% g' g! Q; ^/ r$ Z) @: w  va. GRE/IP
9 r/ o$ L- a. X7 s  o0 M5 K6 u% Cb. GRE/IPv6
c. IPv6/IP
d. GRE/Multipoint
% w4 k$ f9 w0 m3 B答案是A
* S3 t3 G1 z' M
- e5 k' T3 P9 ~0 L% u0 V( _) B我認為GRE/IP為by default，GRE encapsulate original packet，加上new IP header是正確的，
所以選BC應該沒錯

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