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What is a benefit of a virtual LAN (VLAN)?
A. It increases the number of broadcast domains
B. It decreases the number of broadcast domains
C. It increases the numberr of collision domains
D. It decreases the number of collision domains
E. Since it is a vitual Interface it never shuts down
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Answer / mr.shahin07
A) VLAN increase the number of broadcast domain.
Just for example - Take a switch of 12 ports.
As we everybody know that in a switch,
Broadcast Domain - 1
Collision Domain - No of ports i.e. here it is 12.
So in this condition, each port can communicate with each
other. in spite of having 1 broadcast domain & 12 collision
domain.
Make two VLAN (Such as VLAN - 5 (Sachin), VLAN 6 (Dravid)on
that switch & assign SIX (1,2,3,4,5 & 6) ports of the switch
to VLAN 5 & assign rest of SIX (7, 8,9,10,11 & 12) on VLAN 6.
Now port no 1 can't communicate with port 9 without any
router & inter VLAN routing. That means, Creating VLAN is
nothing but logical division of switch. Here we created 2
VLANs, So now there is two broadcast domain.
a) VLAN increase the number of broadcast domain.
b) VLAN reduce the size of broadcast domain.
| Is This Answer Correct ? | 19 Yes | 2 No |
Answer / m hussain
virtual lan is nothing but dividing a big switch into many switch. suppose if we have 12 port switch . if we divide this switch into two switch . suppose vlan 1 and vlan 2 . suppose in each vlan we have 4 and 6 port is there respectively.after dividing the vlan thus the computer connected with vlan1 can't communicate with vlan2 computer . thus we get two switch from one switch . in a sw. we can create many vlan upto 1005 vlan.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / kapilasdhir
B. It decreases the number of broadcast domains
| Is This Answer Correct ? | 14 Yes | 16 No |
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GUY i Have attended one interview for the data craft and they are offering me L1 postion and i am working at l2 in cisco so there is no way to get in the datacraft i am posting here the question he asked to and i have tested the interviewer and i come to know he was not having any knowledge. His questions are-: 1) what is Vlan 2) what is stp and what is difference between stp and RSTP 3) what is HSRP and Diffrence betwwen HSRP and GLBP 4) how to configure HSRP 5) Scenario Based question ( if we have two router and both are connected and there are having redundancy means two interface of the router r1 is connected to the two interface of Router R2 (R1)-------------(R2 (R1)-------------(R2 Now he want to configure the router in such a Manner that if one link down second link should come up.My answer was HSRP and his is "F looting static routing was i wrong "i know F looting Static routing is Theoretically possible but it is not fusible in the scenario where you have multiple router connected to the same router and if you have configured sub interface i challenged him and he lost The Battle and he get angary 5) what the eigrp and how it works 6) tables in eigrp 7) the information of feasible successor where it saved now after answering these all he was very angry ( i can fill the heat) 8) then he come to ospf Area type ( he was also not aware) 9) LSA type and its working ( he was also having confusion ) 10) then is asked routing by rummer( Theroy) 11) hello and dead intervel of EIGRp (theory) 12) Selection cretaria for Eigrp slecting best path ( here we have a long discussion on MTU and he lost the battle and agree That MTU never comes in the accounts in this process) 13) what is ACL type of acl ( here he was aware of TWO type Standard and extended i have told him 5 type( he again get Angry) We have 2hr of discussion and and he told me he will call me latter but i know he never call
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CCNA 
