Home > ICND1 – Troubleshooting

ICND1 – Troubleshooting

June 10th, 2017 in ICND1 100-105 Go to comments

Question 1

Question 2

Question 3


The ports on the switch are not up indicating it is a layer 1 (physical) problem so we should check cable type, power and how they are plugged in.

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9


Serial0/0 is “administratively down”, that means this interface is shutting down.

Question 10

Question 11

Comments (58) Comments
  1. romina
    November 6th, 2013

    would you please sombody describe men question no2?

  2. helper1
    November 8th, 2013

    The answer is C because A) does not belong B) is incorrect D) Is another way to define the route out and E) is incorrect because you are not dealing with the console to telnet.
    C) is correct because if you break the mask down it comes out to – which is decided by the .240 mask

  3. Kristof
    November 21st, 2013

    The switch IP address and the default gateway address are actually on different subnets. IP and gateway addresses must be on the same network so the gateway address should be changed.

  4. Boom
    December 8th, 2013

    @Romina, it’s called subnetting….

  5. oluseye
    December 10th, 2013

    question 1 was on my icnd1 exam.

  6. CCENT Someday
    January 31st, 2014


    I plan on taking exam next week. What other sims/labs did you get besides the OSPF 6 router?

    Thanks in Advance!

  7. max
    February 16th, 2014

    question 2/
    mask 240 = /28 = 16 – 2 hosts or 14 hosts

    How is it possible?!?! the IP address just has one more ip, or

    This question is totally weird to me!

  8. Larry
    February 20th, 2014

    Probably the best way to understand a question like this is to recreate it in your own CCNA lab. It is a combination of understanding subnetting and when you can actually try it in your own lab it makes all the difference in the world instead of trying to memorize this. I got a CCNA lab here http://www.certificationkits.com/ccna-certification-kits/ with three 1841 routers and a 3550 switch and two 2950s(they also include a 100 page subnet workbook that has about 150 practice questions). You can easily recreate scenarios like this and see it work. I got a 978 this morning on my exam between my lab and here. Best of luck, on to the next Cisco exam!

  9. Konan
    March 3rd, 2014

    @max, is just host-IP,but not network-subnet IP.So,32-28=4,2^4=16(box size=increment). is the network-subnet IP (or lets say subnet ID). is the broadcast IP for this subnet,and is the range for valid host IPs.If we change IP of gateway to the IP that falls to this range,then we can access to the switch remotely.So, falls to this range.

  10. JamesK
    March 6th, 2014

    Q1 – According to the router, the network is /29, but the server thinks it’s /28. The highest usable address is, which includes the server address. So, the server should be able to communicate with NY. It will only have problems with addresses – So, that entire question is wrong.

  11. DC
    March 7th, 2014

    @JamesK, I think what they are going for here is recognizing that that the CIDR and server subnet don’t match. It’s all about the process of troubleshooting.

  12. max
    March 9th, 2014

    Konan, you are right! When I take a look on this question I was tired hehe. I was studying it for a long time. Well, sorry and thanks for your help

  13. D1Vad
    March 24th, 2014

    Q1 – @JamesK, totally agree. Would still pick answer C, but the question is stupid as the TFTP communication from NY router will work with the TFTP server.

  14. fez
    April 24th, 2014

    Passed my 100-101 exam today and question 1,2 were there.. all the best

  15. thot
    May 14th, 2014


  16. Manohar Tn
    May 16th, 2014

    Got 986/1000 Marks, {5/16/2014} 50 Questions, Ospf Sim, Security simlet, and Router and switch Simlet Was also there…..All questions From 9tut. and Examcollections…..Now Heading For Icnd2 And Blogging…..

    For Any Help.
    Manohar Tn
    Website: http://www.techlinko.com
    G+ : https://plus.google.com/u/0/+ManoharTN9/

  17. Anonymous
    May 29th, 2014

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  18. grendel
    July 13th, 2014

    had both of these which I answered as shown here. However must have been another troubleshooting question in there as I got something in there wrong.

  19. AK
    July 18th, 2014

    Please add more troubleshooting questions if you remember more than these two questions.
    I’m planning on taking the test by 8/9. Please contribute if you took the 100-101.

  20. Yaser
    August 17th, 2014

    Yesterday pass the exam, most of the questions are from 9tut website, good luck for all.

  21. Saudi Mizer
    September 6th, 2014

    Took exam yesterday, both these questions were on it.

  22. mohammed yosife
    September 11th, 2014

    Question 2

    C is correct because different network

  23. Cisco2014
    September 25th, 2014

    why wouldn’t Q2 be for the IP default gateway? I understand .241 – .254 are valid hosts IP’s. So we would use the first available host IP .241 for the IP default gateway

  24. Yahia Tariq
    November 22nd, 2014

    Questions 1-2 were in exam on 20/11/2014, more than 45 questions were from 9tut !

  25. Alex’
    January 9th, 2015

    Hi , passed the ICND today with 947/1000. If you have some questions, just ask -> boogey_leo@yahoo.fr

  26. sandy
    January 12th, 2015

    The Q1 & Q2 were in exam today

  27. Anonymous
    February 10th, 2015

    sandy pls do we need command for the troubleshooting questions or its just multichoice answers all through

  28. Anonymous
    February 26th, 2015

    Hey I’m planning on taking CCNA in a couple of weeks. I have been extensively studying from 9tut. Can anyone please tell me if its just enough to go through 9tut? Will I pass if I do that? My confidence level is very low and I just want to pass this very badly.

  29. Rabulo
    March 11th, 2015

    For Qs2:
    Subnet mast convert 240 to binary and we get lowest bit as 16. Therefore increment is 16.

    start address: –
    ………………… (keep adding 16 till u reach address within
    ………………… – ( – thats the network range) – therefore becomes valid router IP

  30. Ahmed
    March 28th, 2015

    q1 in icnd1 exam

  31. Anonymous
    April 15th, 2015

    Took exam today. both Q1 and Q2 were in the exam exactly as they are

  32. G-10
    April 26th, 2015

    Q1 in exam

  33. Rich-NiZEr
    April 28th, 2015

    @ Anonymous what else did you study beside the material that is here on 9tut.net. I wanna book for the test this week but i am not sure if I am 100% ready for the exam… please help with info in regards with study material. thanks.

  34. codred
    April 29th, 2015

    This question came in the exam today


  35. Erick
    May 14th, 2015

    Both of these questions were in my exam yesterday nearly word for word.

  36. shanky burman
    May 18th, 2015

    why default-gateway for 2nd question,why not default-gateway ??

  37. Shank
    May 27th, 2015

    Passed both question was on

  38. J
    June 1st, 2015

    Admin is not the password

  39. Junior
    June 16th, 2015

    Hi Everyone. any advise how i can guarantee pass for icnd1. The exam costs a lot of money and i dont want to fail. God Bless.

  40. Anonymous
    June 26th, 2015

    guys i got free dumps with nuggets from this following link
    wurl. cc/dumps

  41. miguel
    July 9th, 2015

    why does question 1 is C, i think the subnet mask is all right

  42. JackKnife
    July 11th, 2015

    question 1 can’t be C, the subnet mask needs to match the mask for the LAN int on the router (/29 or .248)

  43. JackKnife
    July 11th, 2015

    meant to say “has to be C.”

  44. 9tut
    July 13th, 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/#!oIdESYbD!yyu33vygrfKPy4rcmcbV6qW2fxINNoTokuDM3CjA_og

  45. zipprman
    September 12th, 2015

    Re: question 1, the subnet mask can be different as long as the ip addresses are both in the same network. Both the TFTP server and the router LAN router interface are both in the network. Try it on live gear or packet tracer and it works just fine.

  46. tyler
    March 26th, 2016

    why can i not see the questions??

  47. 9tut
    April 2nd, 2016

    @tyler: You can download the questions in a PDF file at: http://www.9tut.net/icnd1-2-questions-and-answers

  48. Curious Clive
    May 17th, 2016

    Q1, I think the TFTP server address is meant to be or higher, to .110> are valid IP addresses> are valid IP addresses
    Ok it is a case of overlapping subnets but the TFTP address of should work ok, as the address is covered by the smaller subnet of
    Someone correct me if this is wrong but this is how I remember the overlapping subnets explanation in my CCNA book.

  49. CCNA
    June 10th, 2016

    Curious.. I believed the answer is correct TFTP server has an incorrect subnet mask because is connected to the switch I don’t think vlsm would apply here.. Either way I checked all Ip addresses and all them are correct.

  50. CCNA
    June 10th, 2016

    Curious so I decided to setup a lab with this configuration and I got good connectivity with TFTP Server with subnet mask The problem that I see with this question is that a def. gateway is no showing on TFTP server and for this to work I have to set up a def. gateway on TFTP Server… maybe that would answer your question….. Cisco bein difficult as always.

  51. Electrox9
    August 3rd, 2016

    Where can I have access to Sims/labs of ICND1 so test like in the real exam?

  52. CCENT
    August 25th, 2016

    What about questions for the 100-105?

  53. Naeem
    April 8th, 2017

    What are the questions on this page

  54. jane
    May 17th, 2017

    hi guys,
    can someone send me the dumps according the answers of this site for ICND1 and other material???? please please please. I really neeeeeeeeeeeeeeeed it. heeeeelp me please . I’m sad 🙁 🙁

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  55. Anonymous
    August 23rd, 2017

    if the host can ping his own IP
    (Ping – Successful
    Ping – Successful)

    that means the local physical layer is fine.
    the host is not able to ping the other computer/router .
    I believed the answer is
    A. A remote physical layer problem exists.

    why no body question the answer?

  56. Josh
    October 7th, 2017

    @Anonymous: In Q7, Ping to the Default Gateway is unsuccessful. So, there should be a problem within local physical layer.(According to my understanding)

  57. Edward
    November 24th, 2017

    PDF with the latest dumps for CCNA on http://www.9tut.net/icnd1-100-105/new-icnd1-basic-questions-2 post from Irina