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Exam 200-301 topic 1 question 860 discussion

Actual exam question from Cisco's 200-301

Question #: 860
Topic #: 1

Refer to the exhibit. VLAN 23 is being implemented between SW1 and SW2. The command show interface ethernet0/0 switchport has been issued on SW1. Ethernet0/0 on SW1 is the uplink to SW2. Which command when entered on the uplink interface allows PC 1 and PC 2 to communicate without impact to the communication between PC 11 and PC 12?

A. switchport trunk allowed vlan 2-1001
B. switchport trunk allowed vlan 23
C. switchport trunk allowed vian add 23
D. switchport trunk allowed vian 22-23

Show Suggested Answer

Suggested Answer: C 🗳️

by j1mlawton at Feb. 10, 2023, 3:36 p.m.

Comments

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gewe

Highly Voted 2 years, 4 months ago

I would go with option C.. correct me if I m not right

upvoted 14 times

oatmealturkey

2 years, 4 months ago

you are right

upvoted 5 times

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krzysiew

2 years, 2 months ago

if vian = vlan you are right

upvoted 5 times

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Joshua25

Most Recent 8 months ago

Selected Answer: C

Answer is C. Do not allow unnecessary VLANs, for the sake of security and efficiency. Also do not remove VLAN 1, god knows what traffic and functions are relying on it.

upvoted 1 times

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cybercerberes

10 months, 2 weeks ago

C is correct https://community.cisco.com/t5/networking-knowledge-base/how-to-define-the-vlans-allowed-on-a-trunk-link/ta-p/3131083

upvoted 1 times

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bymrdas

11 months, 3 weeks ago

Selected Answer: C

C is correct

upvoted 1 times

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Fitzd

1 year, 1 month ago

To allow communication between PC 1 and PC 2 without impacting the communication between PC 11 and PC 12, you should configure the “switchport trunk allowed vlan add 23” command on the uplink interface (Ethernet0/0) of SW1. This ensures that VLAN 23 is allowed on the trunk link while maintaining the existing VLANs for PC 11 and PC 12

upvoted 1 times

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[Removed]

1 year, 2 months ago

Selected Answer: C

C is very correct gentelmen, the V(I)AN is a typo from this smart website, didn´t you use for it yet? :) A is incorrect, because it will cancle VLAN 1 please correct me if im wrong

upvoted 1 times

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[Removed]

1 year, 3 months ago

A is unnecessary, because you allow VLANs that you do not use on the switch.. adding 23 is sufficient

upvoted 1 times

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squagmire

1 year, 3 months ago

Selected Answer: A

2-1001 doesn't affect PC's 11 and 12 since they are on vlans 22 and 23. I don't think C and D are typos, cisco are just dumbfcks. 2-1001 includes 22 and 23, so i would go with that

upvoted 2 times

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a67c04a

1 year, 4 months ago

Selected Answer: A

Going with A, cause C has a typo

upvoted 2 times

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Yinxs

1 year, 10 months ago

Selected Answer: A

2-1001 includes 22,23

upvoted 2 times

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no_blink404

1 year, 12 months ago

Selected Answer: C

Answer is C, we need to 'add' vlan 23 to the already existing 1 & 22 vlan trunk. All the other answers will overwrite the allowed vlan range.

upvoted 3 times

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dropspablo

1 year, 12 months ago

Selected Answer: A

The command syntax in the C (vian) response is wrong. The letter A command is correct, because vlan 2-1001 ignores default vlans 1 and default vlans 1002-1005, which seems more correct to me when using the trunk tags. Correct me if I'm wrong.

upvoted 3 times