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Exam 200-301 topic 1 question 274 discussion

Actual exam question from Cisco's 200-301

Question #: 274
Topic #: 1

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?

A. SW4 interface Gi0/7 switchport mode trunk switchport trunk allowed vlan 108 ! interface Gi/0/2 switchport mode access switchport access vlan 14 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 access switchport access vlan 14
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
C. SW4 interface Gi0/2 switchport mode trunk switchport trunk allowed vlan 14 SW11# interface Gi0/1 switchport mode trunk switchport trunk allowed vlan 14 SW9# interface Gi0/2 switchport mode trunk switchport trunk allowed vlan 108
D. SW4 interface Gi/0/2 switchport mode access switchport access vlan 14 SW11# interface Gi0/2 switchport mode trunk switchport trunk allowed vlan 14 ! interface Gi0/0 switchport mode access switchport access vlan 14 ! interface Gi0/1 switchport mode trunk SW9# interface Gi0/2 switchport mode access switchport access vlan 14

Show Suggested Answer

Suggested Answer: B 🗳️

by Liuka_92 at June 9, 2022, 10:10 a.m.

Comments

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kishan365

Highly Voted 2 years ago

Selected Answer: B

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.

upvoted 14 times

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HMaw

Highly Voted 2 years, 8 months ago

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

upvoted 7 times

binrayelias

2 years, 6 months ago

It's B, based on the questions S4 gi0/2; SW11 gi0/2,gi0/1; and SW9 gi0/2 is not configured.

upvoted 1 times

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linuxlife

2 years, 4 months ago

C is wrong.

upvoted 2 times

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thomson_johnson

2 years, 4 months ago

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

upvoted 4 times

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bri24838

Most Recent 11 months, 3 weeks ago

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

upvoted 1 times

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xtraMiles

1 year ago

C is incorrect. First off, it's missing configuration on SW11, port Gi0/2 to allow VL14.

upvoted 1 times

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kyleptt

1 year, 10 months ago

Selected Answer: B

B is correct this is an annoying question also

upvoted 6 times

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raul_kapone

1 year, 11 months ago

Selected Answer: B

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.

upvoted 1 times

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shumps

2 years ago

B is the answer, you cannot turn one side trunk only so C is wrong

upvoted 1 times

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mfaria

2 years ago

Selected Answer: B

B is correct, A, C and D lacks configuration of VLAN and Trunk on S4, S11 and S9

upvoted 1 times

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dropspablo

2 years, 2 months ago

Selected Answer: B

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

upvoted 4 times

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deluxeccna

2 years, 3 months ago

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.

upvoted 5 times

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linuxlife

2 years, 4 months ago

C doesnt allow all two VLANs between SW4 and SW11 which B does.

upvoted 2 times

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iMo7ed

2 years, 5 months ago

Selected Answer: B

It is B

upvoted 1 times

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Sdiego

2 years, 6 months ago

Selected Answer: B

C answer is incorrect, missing configuration for Gi0/2 interface on SW11

upvoted 2 times

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Anas_Ahmad

2 years, 6 months ago

Selected Answer: B

just look on SW 4 configuration ( switchport trunk allowed vlan 14,108 )

upvoted 4 times

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jibon_22

2 years, 7 months ago

Correct ans is: B Because look carefully, for G0/2 of S9, allowed VLAN is 108 not 14.

upvoted 3 times

joeylam

2 years, 7 months ago

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.

upvoted 2 times

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TMT91

2 years, 10 months ago

Selected Answer: B

I think B is the right answer

upvoted 3 times

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ShadyAbdekmalek

2 years, 10 months ago

However B seems most accurate among all other choices , I still think there should be a typo . VL 108 should not be allowed between SW11 and and SW9. the trunk configuration must be the same at both sides

upvoted 3 times

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