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VTP Questions 2

April 3rd, 2017 in SWITCH 300-115 Go to comments

Question 1

Explanation

VLAN 1 and VLANs 1002 to 1005 are always pruning-ineligible; traffic from these VLANs cannot be pruned. Extended-range VLANs (VLAN IDs higher than 1005) are also pruning-ineligible. Therefore VTP pruning can be applied only from VLAN 2 to 1001.

Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12-2_55_se/configuration/guide/scg_2960/swvtp.html

Question 2

Explanation

VTP Pruning makes more efficient use of trunk bandwidth by forwarding broadcast and unknown unicast frames on a VLAN only if the switch on the receiving end of the trunk has ports in that VLAN

Question 3

Explanation

In Client mode we cannot create VLAN and Switch1 does not have any trunk links so it cannot receive any VTP updates. There is no answer with configure trunk links so we have to choose the solution “change VTP mode to server and enable 802.1q”. But this is a dangerous solution because this switch can “update” other switches with its VLAN database via VTP.

Question 4

Explanation

From the output above we see Switch Company A cannot receive VTP updates from Switch Company B. Therefore we should check the trunking links connecting two switches. Manually force trunking may be a good solution.

Question 5

Explanation

VTP Pruning makes more efficient use of trunk bandwidth by forwarding broadcast and unknown unicast frames on a VLAN only if the switch on the receiving end of the trunk has ports in that VLAN

Question 6

Explanation

VLANs 2–1000 are eligible for pruning but VLAN 1 has a special meaning because it is normally used as a management VLAN and is not eligible for pruning. The only way we can remove VLAN 1 is through the “switchport trunk allowed vlan remove 1” command. But even when you remove VLAN 1 from a trunk port, the interface continues to sent and receive management traffic, for example, Cisco Discovery Protocol (CDP), Port Aggregation Protocol (PAgP), Link Aggregation Control Protocol (LACP), DTP, and VTP in VLAN 1.

A good thing of clearing VLAN 1 is user data cannot travel via this VLAN anymore. BPDU traffic is also banned on this VLAN.

Note: The Cisco IOS-based Catalyst 2900XL/3500XL switches do not allow you to clear VLAN 1 from a trunk; however, the Catalyst 2950/3550, Cisco IOS 4000/4500, and native IOS 6000/6500 switches allow you to clear VLAN 1.

Question 7

Question 8

Explanation

If the revision number of the new switch is higher than other switches in the same VTP domain then it will overwrite other switches’ VLAN databases even if the new switch operates in VTP Client mode. So we should set the VTP mode of the new switch to Transparent (which will also reset its Revision Number to 0) before plugging to our network.

Question 9

Explanation

VTPv3 supports for extended VLAN range (VLANs 1006 to 4094). VTP versions 1 and 2 only supports VLANs 1 to 1005. If extended VLANs are configured, we cannot convert from VTP version 3 to version 1 or 2.

Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_52_se/configuration/guide/3560scg/swvtp.html

Question 10

Explanation

These switches are running VTPv1 so they cannot share the MST configuration with each other (only VTPv3 supports MST). Therefore in order to share the same MST with DSW2, DSW1 must be manually configured with the same region name, revision number and VLAN-to-instance mapping with DSW2.

Comments
  1. MPG
    April 14th, 2015

    Q1-C explain … http://www.cisco.com/c/en/us/support/docs/lan-switching/vtp/10558-21.html
    “VTP pruning does not prune traffic from VLANs that are pruning-ineligible. VLAN 1 and VLANs 1002 to 1005 are always pruning-ineligible; traffic from these VLANs cannot be pruned. Extended-range VLANs (VLAN IDs greater than 1005) are also pruning-ineligible.”

  2. CCAr Certified
    April 24th, 2015

    My butt hurts

  3. RJ
    May 26th, 2015

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  4. KeyF
    June 5th, 2015

    Hi, you can explain why Q5 is A…C should be best match. The scenario is general and VTP is not mentioned in the configuration, so removing manually the not needed Vlan always work!

  5. jk
    June 10th, 2015

    pls send me latest dumps on j4jais@hotmail.com

  6. anon
    July 18th, 2015

    Q5? Isn’t it C.. allowed VLANs?

  7. Anon
    July 18th, 2015

    Q5 is not C because of one bit of word trickery… Focus on this: “Which Cisco IOS feature can be used.” Manual pruning is not a feature, but rather an option. Should still be A.

  8. Anonymous
    August 14th, 2015

    why now the question has been remove?

  9. Train
    August 14th, 2015

    Because of copyrighted issues, certprepare had to remove all questions and answers. You can download them at http://www.mediafire.com/view/9mq20kx0mgam6k7/SWITCH_July_2015.pdf

  10. april rose
    August 16th, 2015

    thank train with my heart

  11. Lucky
    October 14th, 2015

    @TOOBA u r right…

  12. Joseph
    October 23rd, 2015

    Anyone can explain Q (7) and What is the right answer ? Thanks.
    Question
    Switch A, B, and C are trunked together and have been properly configure for VTP. Switch B has all VLANs, but Switch C is not receiving traffic from certain VLANs. what would cause this issue?
    Thanks :-)

  13. polocom
    October 24th, 2015

    Joseph,
    these switches have either been configured in the various mode of SERVER,CLIENT and TRANSPARENT .
    Switch C can receive VLAN information from Switch A so Switch B can forward it to Switch C without updating its VLAN database -> Switch B is in VTP transparent mode.

  14. Tpoxa
    November 10th, 2015

    @certprepare
    guys, Q6 says the correct answer is
    switchport trunk allowed vlans remove
    BUT
    actually it should be
    switchport trunk allowed vlan remove (word vlan without ending “s”)
    Is this just mistyping or a trick?

  15. Link NOT Working
    November 26th, 2015

    On the galvin braindump question 38:

    A network engineer is extending a LAN segment between two geographically separated datacenters. Which enhancement to spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment?

    A – Modify spanning-tree priorities to dictate the traffic flow.
    B – Create a L3 transit VLAN to segment the traffic between sites.
    C – Use VTP pruning on trunk interfaces.
    D – Configure manual pruning between the two locations.

    on dump the answer is C but, cisco says its best practice to use manual pruning, on the other hand what makes more sense in this scenario is to create a L3 VLAN to segment traffic, and we are talking about spanning-tree so i would say answer is D – manal pruning.

    Anyone got this right?

  16. Akarim
    November 30th, 2015

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  17. Link NOT Working
    April 11th, 2016

    The key point to the question is “Which enhancement to spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment? Manual pruning is not an enhancement to STP where as pruning is….

  18. Wally
    June 5th, 2016

    Question 1 – better worded answer is in the link:

    VLAN 1 and VLANs 1002 to 1005 are always pruning-ineligible; traffic from these VLANs cannot be pruned. Extended-range VLANs (VLAN IDs higher than 1005) are also pruning-ineligible.

  19. CLI
    July 3rd, 2016

    Q5. Isn’t it C?

  20. Maxzer0
    July 8th, 2016

    I believe Q5 is VTP pruning as the latter is a Cisco OS feature. I wouldn’t call ‘switchport trunk allowed VLAN’ a feature but I may be mistaken. Any advice?

  21. Anonymous
    July 9th, 2016

    Hello,

    can someone help me with latest dumps of ccnp switch 300-115?

    please send me at email {email not allowed}

    Thanks all

  22. basta
    July 23rd, 2016

    passed yesterday. 790/1000 ;)
    aaa-dot1x-, hsrp- and lacp-lab plus cdp- and lldp-drag & drop-questions.

    i think it’s very important that you configure only the physical interfaces in the lacp-lab (do not configure “the switchport trunk allow vlan” on port-channel1-inteface – but on the physical-interfaces fastethernet0/3 -4 ).

    all questions valid from examcollection-premium.exam.191q

  23. CCNPSwitch
    July 30th, 2016

    Hai basta

    Are the dumps valid? I have the acualtestcolllection 191q ….. Are they valid still? Having my exam
    on aug 6th

  24. Meh
    November 14th, 2016

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  25. Micheal
    December 5th, 2016

    Download actual Implementing Cisco IP Switched Networks 300-115 exam questions with answers from https://www.dumps4download.us/free-300-115/cisco-question-answers.html

  26. netmec3651
    May 1st, 2017

    Just took the exam and the new drag and drops are in there and the etherchannel lab is stupid. no matter what method you follow the port-channel will not come one. totally ridiculous!!! I’ve done these thousands of times with no issue in the real world. This is total bullshit!

  27. fekas
    May 6th, 2017

    netmec3651, that happened with me too.

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