---
title: A_Question CCNA & Correction
---

###### tags: `__ccna_EN`
A_Question CCNA & Correction

revoir
Q98 - IPV6
Q93 - Etherchannel

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Q10 - DNA Center
Q2
Q6

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Q1:


Q2:




https://community.cisco.com/t5/switching/root-guard-vs-bpdu-guard/td-p/2072062


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Q4:

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6/configuration/xe-3s/ipv6-xe-36s-book/ip6-multicast.html

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Q7:


255.255. 11] 00 0000 . 0000 0000
1111 1111 . 1111 1111 . 1100 0000 . 0000 0000

1111 1111 . 1111 1111 . 0000 0000 . 0000 0000
1111 1111 . 1111 1111 . 0100 0000 . 0000 0000
1111 1111 . 1111 1111 . 1000 0000 . 0000 0000
1111 1111 . 1111 1111 . 1100 0000 . 0000 0000
255.255.192.0/18
172.28  . 1000 0000 . 0000 0000
172.28. . 1111 1111 . 1111 1111


-----------------------------------
-----------------------------------


172.28.228.144/29
classe b
default mask /16
172.28.0.0
10101100.00011100.00000000.00000]000
10101100.00011100.1110010[0.10010]000
2²3 machines = 8 ip possible
8 - 2 = 6 hote possible


172.28.228.144/23
1111 1111 .1111 1111 . 1111 111 0 .0000 0000
10101100.00011100.11100100.0000 0000
172.28.228.0
10101100.00011100.11100101.1111 1111
172.28.229.255


172.28.228.144/21

CLASSE B ==== masque ==== 255.255.0.0/16

172.28.228.144

10101100.00011100.1110 0[100.0000 0000]
2 PUIS 11 =  2048    NOMBRE D'HOTE PAR SOUS RX
2048 - 2 = 2046 nombre d'hote possible 

10101100.00011100.1110 0[000.0000 0000]

172.28.224.0

10101100.00011100.1110 0[111.1111 1111]

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- [ ]

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Q35:

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/5_x/rest_api_config/b_Cisco_N1KV_VMware_REST_API_Config_5x/b_Cisco_N1KV_VMware_REST_API_Config_5x_chapter_010.pdf

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Q48:
![Uploading file..._5036ff6z9]()

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floating static route
static route with Administrative route plus élevée que celle plus en place
host route= /32

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https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wlan-security/71978-acl-wlc.html

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Q68
:

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Q75:
C'est private chaque classe a ça range


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Q90:
https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-5/configuration-guide/b_cg75/b_cg75_chapter_0100010.html

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Q106
A Root Bridge is a reference point for all switches in a spanning-tree topology. Across all connected switches a process of election occurs and the Bridge with the Lowest Bridge ID is elected as the Root Bridge.

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Q110
refers about Violation mode:
refer not increment

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Q122
https://www.ciscopress.com/articles/article.asp?p=426638&seqNum=3

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Q1