Home > CCNA – STP 2


May 3rd, 2015 Go to comments

Note: If you are not sure about Spanning Tree Protocol, please read our Spanning Tree Protocol STP Tutorial (Premium Tutorial).

Question 1

Question 2

Question 3


First, the question asks what switch services the printers, so it can be Switch 3 or Switch 4 which is connected directly to the Printers.

Next, by comparing the MAC address of Switch 3 and Switch 4 we found that the MAC of Switch 3 is smaller. Therefore the interface connected to the Printers of Switch 3 will become designated interface and the interface of Switch 4 will be blocked. The picture below shows the roles of all ports:



DP: Designated Port
RP: Root Port
BP: Blocked Port

(Please notice that Switch 1 will become the root bridge because of its lowest priority, not Switch 3)

Comments (35) Comments
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  1. murad
    January 19th, 2015

    Q2 in my exam today . Passed

  2. Abdullah Al Noman
    January 26th, 2015

    Hello Everyone,
    I am preparing myself for CCNA 200-120 vendor exam.
    It would be grateful to me if any one can send the latest dumps & questions to my mail ID: nomanbgc@gmail.com
    Thanks in advance

  3. Pieter
    February 22nd, 2015

    Q3 last week. Even reading the question now, at home, without any pressure from the exam the question hardly makes any sense. Or do you REALLY think people will have the time during the exam to make an oversight like there is on this page?

  4. Ghada
    February 24th, 2015

    Passed yesterday with score 1000 Thank God

    The exam was 51 questions, only one drag and drop about cable types, all questions are very easy just similar to 9tut.

    The lab simulations were Eigrp , ACL1 (similar to 9tut exactly) and ACL2 (modification 3 but with host B to access the finance server)

    Good luck for everyone, just be relaxed its very very easy :)

    question 1 was in it

  5. Peter
    March 26th, 2015


  6. Hump
    March 27th, 2015

    pls i am preparing for CCNA, would appreciate latest dump, pls humphreychinegwundo@yahoo.com

  7. iftikhar
    March 28th, 2015

    It would be grateful to me if any one can send the latest dumps & questions to my mail ID: iftikhar.exams@pu.edu.pk

  8. John
    April 10th, 2015

    Hi Guys!
    Question 3 , i think port of SW2 to SW1 is block port(alternate port) not is root port (RP)

  9. wesdad
    April 12th, 2015

    Takin the CCNA 200-120 exam . the latest dumps and questions would really, examples of simulations questions.. wesdad40@aol.com

  10. Siaulius
    April 12th, 2015

    I am preparing for CCNA 200-120 exam. Could someone help by sending latest dumps and questions. Thanks in advance. siaulietisss@yahoo.com

  11. Zover@ss
    May 14th, 2015

    q2 pass 1000/1000

  12. ravi
    June 19th, 2015

    good site of ccna

  13. Me
    June 23rd, 2015

    None of these on exam today. (labs: ACL and EIGRP – 2 friends before me stated NAT as well.)

    Would also like to note a question I did not see on 9tut. Fairly basic, but worth note. Not verbatim or course, but: How is a private address handled if it is placed on an ISP WAN interface. A: (although strictly not true) Private addresses can not be routed on the public internet backbone (or something to that effect).

  14. Questions Today
    June 24th, 2015

    Q1 was in exam. Praise The Lord and thnx 9tut passed on 24th june 986/1000.
    Some new questions to be observed:
    What will happen if a private IP address is assigned to a public interface connected to an ISP?
    A. Addresses in a private range will be not be routed on the Internet backbone.
    B. Only the ISP router will have the capability to access the public network.
    C. The NAT process will be used to translate this address to a valid IP address.
    D. A conflict of IP addresses happens, because other public routers can use the same range.
    Answer: A
    What are three values that must be the same within a sequence of packets for Netflow to consider
    them a network flow? (Choose three.)
    A. source IP address
    B. source MAC address
    C. egress interface
    D. ingress interface
    E. destination IP address
    F. IP next-hop
    Answer: A,D,E

  15. Newbie
    June 27th, 2015


    I am preparing myself for CCNA 200-120

    It would be very grateful to me if any one can send the latest dumps & questions to my mail ID: emrod616@yahoo.com

    Thank You So Much!!!

  16. 9tut
    July 12th, 2015

    @all: We had to move all the questions and answers out of 9tut. We can only keep the explanation. You can download the questions and answers at: https://mega.co.nz/#!wt9kVCjL!vvp79FTtjsqfpCgq0uTOTKlE6_qsLY6C_m163sNGs_s

  17. Anonymous
    August 30th, 2015

    Hi, i have fone through most of the questions and notes, perparing for the CCNA exam within a month. Like Alan, appreciate if may send hanri_m@yahoo.co.uk latest dump; thanks in advance,

  18. Lon
    September 1st, 2015

    Hi, I will be also be taking my CISCO exam wihtin a month.

    Can someone send me also the latest dumps? Please send to msg2msg2@yahoo.com

    Hope that you could help me, thanks!

  19. question 3
    October 29th, 2015

    question 3 – why Switch 3 MAC is smaller- can any one pls explaine?

  20. Abdullah
    November 1st, 2015

    Please send me the latest dumps for ccna 200-120

  21. kathirvel
    December 29th, 2015

    Takin the CCNA 200-120 exam . the latest dumps and questions would really, examples of simulations questions.. {email not allowed}

  22. LonesomeCowboy
    March 23rd, 2016

    Taking CCNA composite on march-31. Can anyone plse send the latest dumps to
    tutor916 (at) diceit.de
    Thanks in adv. & thanks to all the guys that keep 9tut running, great job!

  23. sammy
    May 16th, 2016

    Please send me the latest dumps for ccna 200-120. preparing for the ccna exam. thanx to ol in adv . plz do send me the dumps. ASAP.
    {email not allowed}

  24. sammy
    May 16th, 2016

    rishipahwa25 (at) gmail.com

  25. zinou
    May 26th, 2016

    I’m preparing for the CCNA 200-120 Exam. please send me the latest dumps to zineeddine.b(at)hotmail.com

  26. vinod
    July 5th, 2016

    are all these questions will come exactly same in the exam???
    or they will jumble the options and change the questions slitghly???

  27. Anonymous
    July 5th, 2016

    Questions are the same as here however, the answers are not in the same order as here.
    IP’s, Hostnames, may be different on the same but all topics are fully covered here on 9tut.

    Good luck!

  28. Claudiolucas
    August 5th, 2016

    PDF send all questions to {email not allowed} … Thanks!

  29. Claudiolucas
    August 5th, 2016

    PDF send all questions to claudiolucas2010(at)gmail.com….thanks!

  30. DHAGO
    August 5th, 2016

    CAN ANY ONE SEND ME LATEST DUMPS? PLEASE…….. {email not allowed}

  31. DHAGO
    August 5th, 2016

    can any one send me latest dumps? aamino107(at)Hotmail.com

  32. Henry
    September 20th, 2016

    FOr STP portfast, a good packet tracer example is here…

  33. Mingini
    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.

  34. Bimi
    November 17th, 2016

    hello guys, i don’t see to understand why switch1 is the root bridge. Yes it has the lowest MAC Address but priority of both switch3 ans 4 are lower than that of switch1. I was expecting switch3 to be the root bridge. Can someone please explain???

  35. Khair
    March 30th, 2017

    @Bimi, in STP the root bridge is elected based on bridge-id and the bridge-id is the combination of MAC+Priority. Whichever switch has the lowest MAC address will be selected as root bridge, and priority is checked after that as a tie breaker. Here the MAC address of switch 1 ending (7320) is the smallest as compared to the rest and switch 3 ending with 733a (a in hexadecimal is equal to 10 which is greater than 0). hope it is clear now

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