Refer to the exhibit. The following must be considered:
✑ SW1 is fully configured for all traffic.
✑ The SW4 and SW9 links to SW1 have been configured.
✑ The SW4 interface Gi0/1 and Gi0/0 on SW9 have been configured.
✑ The remaining switches have had all VLANs added to their VLAN database.
Which configuration establishes a successful ping from PC2 to PC7 without interruption to traffic flow between other PCs?
To establish a successful ping from PC2 to PC7 without interrupting traffic flow between other PCs, the correct configuration needs to ensure that VLAN 14 and VLAN 108 are permitted on trunk links where necessary. SW4's interface Gi0/2 needs to be configured as a trunk and allowed to carry VLAN 14 and VLAN 108. SW11's interfaces Gi0/2 and Gi0/1 also need to be configured as trunks and allowed to carry VLAN 14 and VLAN 108. SW9's interface Gi0/2 needs to be configured as a trunk and allowed to carry VLAN 14. This configuration provides the necessary VLAN tagging and allows traffic to flow between all relevant devices without interruptions.
Did anyone notice that all the wrong answers have exclamation marks (!!) in the CLI?
The key is " without interruption to traffic flow between other PCs". Thus the trunk port must be allowed for the multiple VLAN`s for the seamless traffic flow.
C is correct. Please simulate in Cisco Package Tracer and you guys will know why it's correct. All I need to make G0/2 on SW4 to be trunk port and G0/1 on SW11 to be trunk port. I don't even have to touch SW9. Stop debating, hand on is alway the best and you will never forget. PS - preconfigured all the switches as mentioned in question. Good luck
It's B, based on the questions S4 gi0/2; SW11 gi0/2,gi0/1; and SW9 gi0/2 is not configured.
C is wrong.
C must be wrong, because PC2 and PC7 are in VLAN 14, and the last command in C looks like that: SW9# interface Gi0/2 switchport mode trunk switchport trunk allowed vlan 108
B is correct this is an annoying question also
Based on the exhibit and the given information, the correct configuration that establishes a successful ping from PC2 to PC7 without interruption to traffic flow between other PCs is: B. SW4 interface Gi0/2 switchport mode trunk switchport trunk allowed vlan 14,108 SW11 interface Gi0/2 switchport mode trunk switchport trunk allowed vlan 14,108 ! interface Gi0/1 switchport mode trunk switchport trunk allowed vlan 14,108 SW9 interface Gi0/2 switchport mode trunk switchport trunk allowed vlan 14 In this configuration, SW4 and SW11 are trunked with allowed VLANs 14 and 108, while SW9 is trunked with only VLAN 14 allowed. This allows traffic to flow between PC2 and PC7, which belong to VLANs 14 and 108 respectively. The other VLANs will also continue to function without interruption.
just look on SW 4 configuration ( switchport trunk allowed vlan 14,108 )
correct answer is B, don't forget to always check the discussion even if you think the answer is obvious.
C is wrong. The same link between SW11 and SW9 has only VLAN 14 allowed on one side and only VLAN 108 on the other. In this case, none of them pass. This configuration doesn't make sense: SW11# interface Gi0/1 switchport mode trunk switchport trunk allowed vlan 14 SW9# interface Gi0/2 switchport mode trunk switchport trunk allowed vlan 108
Correct ans is: B Because look carefully, for G0/2 of S9, allowed VLAN is 108 not 14.
at G0/2, S9 have to tag traffic from pc7 to vlan 108 and 14. G0/2 of S9 should allowed both VLAN 108 and 14.
C doesnt allow all two VLANs between SW4 and SW11 which B does.
C answer is incorrect, missing configuration for Gi0/2 interface on SW11
C is incorrect. First off, it's missing configuration on SW11, port Gi0/2 to allow VL14.
B is correct
B is correct. SW11 is unconfigured, so their ports (Gi0/2 and Gi0/1) need to be configured as trunks to PC2 can ping PC7. Also, it needs allowing the VLAN 14 fot both interfaces (Gi0/2 and Gi0/1). Alternative C only configures the Gi0/1 interface, not both.
B is the answer, you cannot turn one side trunk only so C is wrong
B is correct, A, C and D lacks configuration of VLAN and Trunk on S4, S11 and S9
It is B