Home > CCNA – Trunking Questions

CCNA – Trunking Questions

May 12th, 2015 Go to comments

Question 1


The show vlan command only displays access ports, the trunk ports are not shown in this command (we can use the “show interface trunk” command to see trunked ports). In the output we can see the ports Fa0/1 connecting between two switches in VLAN 20 -> they are access ports and only VLAN 20 can communicate. To make all VLANs can communicate (with the same VLAN at the other switch), the link between two switches must be set as trunk -> B is correct.

Question 2

Question 3

Question 4

Question 5


Dynamic Trunking Protocol (DTP) is a Cisco proprietary protocol for negotiating trunking on a link between two devices and for negotiating the type of trunking encapsulation (802.1Q) to be used.

Question 6

Question 7

Question 8

Question 9


IEEE 802.1Q is the networking standard that supports Virtual LANs (VLANs) on an Ethernet network. It is a protocol that allows VLANs to communicate with one another using a router. 802.1Q trunks support tagged and untagged frames.

If a switch receives untagged frames on a trunk port, it believes that frame is a part of the native VLAN. Also, frames from a native VLAN are not tagged when exiting the switch via a trunk port.

The 802.1q frame format is same as 802.3. The only change is the addition of 4 bytes fields. That additional header includes a field with which to identify the VLAN number. Because inserting this header changes the frame, 802.1Q encapsulation forces a recalculation of the original FCS field in the Ethernet trailer.

Note: Frame Check Sequence (FCS) is a four-octet field used to verify that the frame was received without loss or error. FCS is based on the contents of the entire frame.

Question 10

Comments (18) Comments
Comment pages
1 2 3 4 1787
  1. Anonymous
    March 15th, 2016

    are these still valid ?

  2. nick
    March 30th, 2016

    These questions are still valid. Used the VCE file with Vce Trainer!

  3. Mohd Taleb
    May 2nd, 2016

    Question 6:
    C. 802.1Q trunks can use 10 Mb/s Ethernet interfaces.
    D. 802.1Q trunks require full-duplex, point-to-point connectivity.
    according to ccna 3 exploration: trunk is only used on Fast Ethernet and Giga Ethernet. in addition it requires full-duplex, point-to-point connectivity.
    is it Right?

  4. Anonymous
    May 16th, 2016

    where are the questions?

  5. Anonymous
    May 18th, 2016

    How come I cannot see the questions? Do I need to be a member first?

  6. Anonymous
    May 25th, 2016

    I would like to get the latest dump exam

    Please my email is {email not allowed}

  7. Whorf
    July 5th, 2016

    There’s a typo in Q9:
    Answer E should read “capable of CARRYING untagged frames”

    It was driving me mad try to find out what it meant to ‘ear’ a frame!

  8. Anonymous
    July 12th, 2016

    Question 9:

    @Anonymous and Whorf: Thank you for the clarification about the word “earring” actually being “carrying” in answer E. That was frying my brain for a minute there.

    @Chilean33: Thank you for the clarification about Answer C. I was confused as to why that was incorrect at first, since I knew that other protocols (VTP, DTP, STP, etc) deal with vlan administration, negotiation, and re-convergence issues, but now thinking back to the word “exclusively”, I guess that doesn’t really work, since 802.1Q accepts untagged frames and that could be considered another defining characteristic it has – when compared to ISL of course, which does not do that.

  9. Anonymous
    August 16th, 2016

    can anyone help me please ? i need vce version of this question
    this is my imail
    {email not allowed}

  10. Anonymous
    August 17th, 2016

    Help Me! I need latest vce version of this 200 120 question.
    mail me – aizat_mustakim @ yahoo dot com

  11. Anonymous
    August 18th, 2016

    help me… I need CCNA RnS question… m a i l m e – hondamn1998 @ g mail dot com

  12. azeem
    August 26th, 2016

    my ccna 200-120 has been expire, i want to exam again
    pleas help me i require latest dumps and simulator
    my email address ({email not allowed})

  13. azeem
    August 26th, 2016

    {email not allowed}

  14. azeem
    August 26th, 2016

    azeem.precious gmail.com

  15. azeem
    August 26th, 2016

    my ccna 200-120 has been expire, i want to exam again
    pleas help me i require latest dumps and simulator
    my email address (azeem.precious gmail.com)

  16. Ajay
    November 2nd, 2016

    I need latest dump question and answer

  17. raven
    November 11th, 2016

    I recently passed my 200-120 exam with the use of Grades4sure dumps. I got all same questions in my exam that I prepared from Grades4sure test engine software. I recommend http://www.grades4sure.com/200-120-exam-questions.html to you if you want to clear your CCNA exam in first attempt.

  18. turquoise hats and fascinators
    July 23rd, 2017

    Great website. A lot of useful information here. I’m sending it to several pals ans additionally sharing in delicious. And of course, thank you to your sweat!


Comment pages
1 2 3 4 1787
Add a Comment