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Exam 300-410 All Questions

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Exam 300-410 topic 1 question 371 discussion

Actual exam question from Cisco's 300-410
Question #: 371
Topic #: 1
[All 300-410 Questions]



Refer to the exhibit. An engineer must extend VRF-Lite over a trunk to another switch for VLAN 70 (10.70.70.0/24) on port GigabitEtheret0/0 and VLAN 80 (10.80.80.0/24) on port GigabitEthernet0/1. Which configuration accomplishes this objective?

  • A. interface GigabitEthernet0/0
    no switchport
    ip vrf forwarding 70

    ip address 10.70.70.1 255.255.255.0
    !
    interface GigabitEthernet0/1
    no switchport
    ip vrf forwarding 80
    ip address 10.80.80.1 255.255.255.0
  • B. interface GigabitEthernet0/0
    switchport trunk encapsulation dot1q
    switchport mode trunk
    switchport trunk allowed vlan 70
    !
    interface GigabitEthernet0/1
    switchport trunk encapsulation dot1q
    switchport mode trunk
    switchport trunk allowed vlan 80
  • C. interface GigabitEthernet0/0
    switchport mode access
    switchport access vlan 70
    ip vrf forwarding 70
    !
    interface GigabitEthernet0/1
    switchport mode access
    switchport access vlan 80
    ip vrf forwarding 80
  • D. interface GigabitEthernet0/0
    switchport mode access
    switchport access vlan 70
    !
    interface GigabitEthernet0/1
    switchport mode access
    switchport access vlan 80
    !
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️

Comments

Chosen Answer:
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Highly Voted 2 years, 2 months ago
Selected Answer: B
layer 2 is not VRF, it is dot1q. So trunk away like normal and let the L3 device assign the VRF to the l3 interface.
upvoted 10 times
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HungarianDish_111
Highly Voted 2 years ago
Selected Answer: B
Example configs: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12-2/31sg/configuration/guide/conf/vrf.html https://community.cisco.com/t5/switching/vrf-routing-in-vlan/td-p/3194751 The physical trunk ports are configured with simple trunk configuration. The vrf is associated under the vlan interfaces. 1)create vlans 2)create vrf definition 3)create vlan interface, assign vrf, then IP 4)configure the trunk and allow vlans as required
upvoted 7 times
bk989
9 months ago
If you read the documentation provided by HungarianDish, the example is taken directly from the MPLS VRF document. The answer is B.
upvoted 1 times
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[Removed]
Most Recent 9 months, 3 weeks ago
Selected Answer: B
B is correct
upvoted 1 times
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[Removed]
9 months, 4 weeks ago
Selected Answer: B
B is correct
upvoted 1 times
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Jey117
1 year, 7 months ago
This is stupid. A brakes the trunk from the logical perspective,, you mover it from L2 to a routed port. B is partially correcto. Because you brake the L2 as You kick out all other vlans.... The command does nota Say "add"
upvoted 1 times
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Chiaretta
1 year, 10 months ago
Selected Answer: A
Given answer is correct. The interface is phisical not sub interface. For this reason the dot1q protocol VLAN trunking is not necessary.
upvoted 2 times
Pietjeplukgeluk
1 year, 3 months ago
This seems incorrect as trunking implies dot1q. You may not need it, but the questions states "trunk" as an objective. So it is actually B in this case as L2 does not require any L3(IP) related config.
upvoted 3 times
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inteldarvid
1 year, 10 months ago
Selected Answer: B
option B correct
upvoted 2 times
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Typovy
2 years ago
Selected Answer: B
B is correct
upvoted 3 times
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6dd4aa0
2 years, 1 month ago
Selected Answer: B
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12-2/20ewa/configuration/guide/conf/vrf.pdf Look at page 26-7 onwards
upvoted 4 times
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Lilienen
2 years, 3 months ago
Could someone explain this question? It clearly says 'over a trunk', but how does one extend VRF over a trunk? Cisco is mixing routing and switching here. Shouldn't the answer be B, as that's the only answer with an actual trunk configuration?
upvoted 4 times
Tim303
1 year, 1 month ago
Vlan is L2 network segmentation, VRF is L3 network segmentation, the question indicate that they want VRF over the trunk line, then just configure the trunk associate with the vlan that VRF on
upvoted 2 times
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ellen_AA
2 years, 4 months ago
Selected Answer: A
Given answer is correct
upvoted 2 times
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C (25%)
B (20%)
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