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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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显示全部楼层
% [" {5 Z8 p- [! J$ X在300-135 offical cert guide,有兩題+ z# V D7 x( l% o. N( P9 m
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11. Which statements are true about GRE tunnels?
( o ]& o2 G' A# N( m- ka. The original packet is encapsulated in a GRE header only.# @1 Y+ f: o+ t) e2 |/ c
b. The original packet is encapsulated in a GRE header, and then a new IP header is" u) h% F8 O- R$ I( ?1 }
added.
4 O7 x0 j5 M6 w( Lc. The original packet is encapsulated in an IP header, and then a GRE header is
- c7 x9 u" p. y1 T% m, r9 T# iadded.
" [9 u/ U% W! `d. The original packet header is rewritten by the GRE header.' ^4 d& y# h- K
答案是B; G, k9 t9 A& L& }: H! q
12. When creating a virtual tunnel interface, what is the default tunnel mode?7 E/ Z& m( f# }1 ]* O" V
a. GRE/IP, A* `3 | N& Z. D% N- Y. U2 M
b. GRE/IPv6
+ |3 A; p- Q% E' fc. IPv6/IP* j% Z& `) v! W! E& }: S
d. GRE/Multipoint6 H6 G1 e2 {* s" }
答案是A
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- z; j) M1 U% @* g% e我認為GRE/IP為by default,GRE encapsulate original packet,加上new IP header是正確的,4 ]2 \5 G& r, d+ j" D3 G
所以選BC應該沒錯 |
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