一如既往交换还是40题,一道拖图题必考,三道实验题aaa、lacp和hrsp2,剩余选择题。& {- c5 ]6 P' Q$ {& h
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' ^ V! \( @. s: U U6 g4 {* P选择题Q170, V* t. ?. C; Y; n* B
A network engineer changes the default native VLAN to VLAN 999. After applying the settings on $ L+ @- @% M: G; G- m
" I4 U: `2 e% T+ X5 n% y, @ luplinks to the core switches, the switch control traffic, such as CDP and VTP, is no longer working. The' ~: I. I E& z, b- K& L+ [' [" W' y9 q- b
standard configuration is used for each uplink. What is wrong with the configuration?1 E; S% D; T5 U' l
% t. b3 @4 l$ M- yA. The interface is administratively down.2 p# W7 w& t6 @$ D: X6 X1 Z2 p4 G" o' G# [7 f
B. The encapsulation type is incorrect.0 d# u3 O8 Y# J9 K' C3 f& i! L% J. y6 `0 w, L% b7 F
C. The switchport mode trunk command should be first in the output.$ }8 @* V4 P+ M) f( K
8 R \9 p" w; W$ QD. The native VLAN is not present on the trunk.: h8 t' N- x# O7 z$ K! L% Z: k1 w( {4 Z0 `1 L* Y6 R/ M
E. The control traffic must be manually enabled on the new native VLAN.
! J$ b4 {1 J3 ?6 a8 B这道题出了新选项,The native vlan must be the same and allowed on the trunk,我选的就是新答案。
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. t- c6 F% ]% O3 [7 p实验题' X# d: N0 a; ~# R- R9 ^ S
aaa是原题,参数都未动。
3 `5 d! m* i7 D% |$ g! Tlacp是大家提到的老问题,SWA不能打sw trunk en dot1q,SWB能打。但是未出现port-channel down的情况,我根据题库打的,完全正常!
# n) G6 d9 _# {, C7 Y* _8 ~* Zhsrp2出了新问题:
8 g# y9 I( D4 }0 zQuestion 3 What issue is causing Router R1 and R2 toboth be displayed as the HSRP active router for group 2?
 A. The HSRP group number mismatch
 B. The HSRP group authentication ismisconfigured C. The HSRP Hello packets are blocked D. The HSRP timers mismatch
 E.The HSRP group priorities are different
# p9 _, N" A( D3 z4 u& U我show running-config的时候发现两台机器的authentication都配置了而且一样的,再show standby也都有。只能自己一个个答案去比对,最后发现两台机器的priority不一样,SWA的是default 100,SWB的是130。需要大家注意比对下。
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6 c9 z8 I1 Y5 `4 P6 ^希望大家考试注意,最好还是要show running-config看下,千万别乱套答案!) [- U5 Q6 N/ R( I7 a6 z
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