Refer to the exhibit. Users in the Operations VLAN on Switch A are unable to communicate with users in the Operations VLAN on Switch B. Which action resolves the issue?
A.
Set the switchport mode to dynamic desirable on Switch B.
B.
Set the EtherChannel mode to LACP on Switch A.
C.
Configure the same allowed VLAN list on Switch A and Switch B.
A seems to be correct
We need a trunk to form before VLANs can communicate.
Option C is condition for PAGP to create etherchannel but is not necessary for VLANs to communicate.
C is not correct. This is because the Operations VLAN (VLAN 30) is already allowing in both switches.
The switchport is not in desirable already, only the channel group. The switchport command decides if it will be in trunk or access. Desirable means it will actively try to be in trunk as long as the other side is also "desirable" or "auto." We see both A and B are in dynamic auto so one of them needs to be switched to desirable. The only answer that does that is A.
A is the correct answer.
why A is wrong ::
A. Set the switchport mode to dynamic desirable on Switch B: This option would not resolve the issue. The switchport mode is already set to dynamic auto on both switches, which is the correct setting for a trunk link.
Agree with you yasmiine. Either the question is not correct or both A and C are correct in my opinion
upvoted 1 times
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