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VTP Questions

November 23rd, 2018 in SWITCH 300-115 Go to comments

Question 1

Explanation

VTP updates can only be forwarded on trunk links.

Question 2

Explanation

VTP version 1 and version 2 support VLANs 1 to 1000 only. Extended-range VLANs are supported only in VTP version 3. If converting from VTP version 3 to VTP version 2, VLANs in the range 1006 to 4094 are removed from VTP control.

Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/vtp.html

Question 3

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. In the below example, Server switch doesn’t send broadcast frame to Sw2 because Sw2 doesn’t have ports in VLAN 10.

VTP_Pruning_Enabled.jpg

Question 4

Explanation

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.

Question 5

Explanation

VTP updates can only be forwarded on trunk links.

Question 6

Explanation

VTP version 1 and version 2 support VLANs 1 to 1000 only. Extended-range VLANs are supported only in VTP version 3. If converting from VTP version 3 to VTP version 2, VLANs in the range 1006 to 4094 are removed from VTP control.

Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/vtp.html

Question 7

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 8

Explanation

VTP version 1 and version 2 support VLANs 1 to 1000 only. Extended-range VLANs are supported only in VTP version 3. If converting from VTP version 3 to VTP version 2, VLANs in the range 1006 to 4094 are removed from VTP control.

Question 9

Explanation

If a VTP client or server with a null domain receives a VTP message with the domain populated, it will assume the domain of the received message and add applicable VLANs to its database.

Question 10

Explanation

With VTP version 1 and version 2, when the switch is in VTP transparent mode (VTP disabled), you can create extended-range VLANs (in the range 1006 to 4094)

Comments
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  1. Biddu
    December 29th, 2017

    q10 .,. yes its about mode not version and transparent is the correct answer

  2. Anonymous
    December 30th, 2017
  3. Anonymous
    January 11th, 2018

    To the OP of this freaky site..Why the hell do you not post accurate/correct answers… Question 10 is a prime example. If you are going to charge people fo access to your site, you might want to provide CORRECT service…! Very poor on your part. Very, very poor!!!

  4. Anonymous
    January 17th, 2018

    Hi, regarding Q 10 – looks correct to me
    Extended Vlans
    Not supported in VTP Versions 1 and 2. The switch must be in VTP transparent mode to configure extended-range VLANs. This range is only supported in Version 3.
    good luck

  5. 1WAY
    February 13th, 2018

    Q10. Biddu and the others are right the answer is A. (Transparent.) The question refers to mode not version.

    You can create extended vlans in VTP V1&2 in transparent mode, but transparent mode does not propagate any vlans (including extended VLANs). You can only propagate extended VLANs using VTP v3.

  6. Anonymous
    February 25th, 2018

    hello guys, where can i find the questions, can someone kindly email them to me at: sistustedong at gmail dot com

  7. Neel
    March 1st, 2018

    Referring to question 6, 8 and 10. VTP vrsion 1-2 support VLAN’s 1 to 1001. I’ll tried that one out on real 3750 switches.

  8. mule
    March 20th, 2018

    i think that Q10 the answer is correct. I know that the question refers to what vtp mode, and that makes you think that transparent is correct,but what stops you to configure extended vlan in server mode… you can ,but they are not going to get propagate since only version 3 can do it.

  9. Anonymous
    April 2nd, 2018

    Q10 says TO CONFIGURE not TO PROPAGATE, so answer must be A.

  10. Tamer
    April 7th, 2018

    Q10 is wrong ….correct answer is transparent

    https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_52_se/configuration/guide/3560scg/swvlan.html#wpxref78259

    In VTP version 1 and 2, a switch must be in VTP transparent mode when you create extended-range VLANs. If VTP mode is server or client, an error message is generated, and the extended-range VLAN is rejected. VTP version 3 supports extended VLANs in server and transparent modes.

  11. CCNP
    April 12th, 2018

    Can someone explain Q8 why isit 1001?????/
    vlan 1, 1002 to 1005 are reserved!
    so we have 1000 vlans left. answer should be A?????

  12. lalaversa
    May 12th, 2018

    Q8.
    In reference to CCNP April 12th, 2018 question.
    why do you remove vlan 1 from the count ? Vlan 1 also can be used to carry user traffic.
    Correct answer is B (1001).

  13. dasdas666
    May 30th, 2018

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  14. Raito
    June 7th, 2018

    Q7: I agree with the answer, but why is VTP considered a spanning-tree design enhancement? oO

  15. patkszen
    June 30th, 2018

    Q10 is asking about mode not version, I agree with people here that the answer should be “transparent”

    CCNP April 12th, 2018
    VTP version 2 supports VLAN IDs 1 to 1005, question asks how many vlans can carry user traffic

    now vlans 1002-1005 are special purpose and can’t be used for users traffic
    vlan 1 is native by default, can’t be used for user traffic either
    you probably figure the rest by now

  16. SellSword
    July 20th, 2018

    10 is def wrong

    3560#sh vtp status
    VTP Version capable : 1 to 3
    VTP version running : 1
    VTP Domain Name : cisco
    VTP Pruning Mode : Disabled
    VTP Traps Generation : Disabled
    Device ID : 001c.b110.2d00
    Configuration last modified by 0.0.0.0 at 3-1-93 00:53:20
    Local updater ID is 0.0.0.0 (no valid interface found)

    Feature VLAN:
    ————–
    VTP Operating Mode : Server
    Maximum VLANs supported locally : 1005
    Number of existing VLANs : 15
    Configuration Revision : 10
    MD5 digest : 0x85 0xBB 0xB1 0xA1 0x7B 0x82 0xA2 0x35
    0x7A 0xB9 0xEE 0x6C 0xBA 0xF1 0x2B 0x92
    3560#config t
    Enter configuration commands, one per line. End with CNTL/Z.
    3560(config)#vlan 2001
    3560(config-vlan)#name ccnp
    3560(config-vlan)#exit
    % Failed to create VLANs 2001
    Extended VLAN(s) not allowed in current VTP mode.
    %Failed to commit extended VLAN(s) changes.

    3560(config)#
    *Mar 1 00:03:49.227: %SW_VLAN-4-VLAN_CREATE_FAIL: Failed to create VLANs 2001: extended VLAN(s) not allowed in current VTP mode

  17. neilix007
    July 31st, 2018

    Question: 10
    At work we need to use VTP mode transparent to create any vlan on new a switch build script before joining the domain. Our admin vlan is a number less then 1001.

    Once the vlan is created and int vlan xxx is no shut, then we feed out the rest of the vtp parameters, version 2, domain, password, etc, change the vtp mode to client, we assign this vlan to the trunk along other vlans we know will be in use, even though these other vlans are not yet created, sh vlan brief to verify new vlan along with vlans 1, 1002-1005.
    set up the far side of the trunk, and KA-ZAAM! The remaining vlans for the switch are downloaded from the mothership (otherwise known as the Core).
    sh vlan brief to verify the now long list of domain vlans.
    Mission Accomplished! Well, sort of. New switch is now online, but still need to update IOS to recent version, add the new switch to Cisco Prime,great tool, which will take config backups, and add new device to monitoring, etc….

  18. Archibald K
    November 17th, 2018

    Hello, regarding question 4, does anyone know why answer C is not correct ?

    C. The VTP revision number of the Switch B is higher than that of Switch A.

    Perhaps because of the “most probable cause” statement in the question ? Thank you in advance.

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