Home > ICND1 – Troubleshooting

ICND1 – Troubleshooting

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

[am4show have=’p2;’]

Premium Member: You can test your knowledge with these questions first via this link.

[/am4show]

Question 1

[am4show have=’p2;’]Refer to the exhibit. A TFTP server has recently been installed in the Atlanta office. The network administrator is located in the NY office and has made a console connection to the NY router. After establishing the connection they are unable to backup the configuration file and IOS of the NY router to the TFTP server. What is the cause of this problem?

IP_Subnet_troubleshooting.jpg

A. The NY router has an incorrect subnet mask.
B. The TFTP server has an incorrect IP address.
C. The TFTP server has an incorrect subnet mask.
D. The network administrator computer has an incorrect IP address.

 

Answer: C[/am4show]

Question 2

[am4show have=’p2;’]Refer to the exhibit. A network administrator has configured a Catalyst 2950 switch for remote management by pasting into the console the configuration commands that are shown in the exhibit. However, a Telnet session cannot be successfully established from a remote host. What should be done to fix this problem?

interface vlan 1
ip address 192.168.17.253 255.255.255.240
no shutdown
exit
ip default-gateway 192.168.17.1
line vty 0 15
password cisco
login
exit

A. Change the first line to interface fastethernet 0/1.
B. Change the first line to interface vlan 0/1.
C. Change the fifth line to ip default-gateway 192.168.17.241.
D. Change the fifth line to ip route 0.0.0.0 0.0.0.0 192.168.17.1.
E. Change the sixth line to line con 0.

 

Answer: C[/am4show]

Question 3

[am4show have=’p2;’]Refer to the exhibit. The two connected ports on the switch are not turning orange or green. What would be the most effective steps to troubleshoot this physical layer problem? (Choose three)

troubleshoot_physical_layer.jpg

A. Ensure that the Ethernet encapsulations match on the interconnected router and switch ports.
B. Ensure that cables A and B are straight-through cables.
C. Ensure cable A is plugged into a trunk port.
D. Ensure the switch has power.
E. Reboot all of the devices.
F. Reseat all cables.

 

Answer: B D F[/am4show]

Explanation

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

[am4show have=’p2;’]Refer to the exhibit. A person is trying to send a file from a host on Network A of the JAX Company to a server on Network Z of the XYZ Company. The file transfer fails. The host on Network A can communicate with other hosts on Network A. Which command, issued from router RTA, would be the most useful for troubleshooting this problem?

file_transfer_troubleshooting.jpg

A. show flash:
B. show history
C. show version
D. show interfaces
E. show controllers serial

 

Answer: D[/am4show]

Question 5

[am4show have=’p2;’]Refer to the exhibit. A user cannot reach any web sites on the Internet, but others in the department are not having a problem. What is the most likely cause of the problem?

ipconfig.jpg

A. IP routing is not enabled.
B. The default gateway is not in the same subnet.
C. A DNS server address is not reachable by the PC.
D. A DHCP server address is not reachable by the PC.
E. NAT has not been configured on the router that connects to the Internet.

 

Answer: C[/am4show]

Question 6

[am4show have=’p2;’]Refer to the exhibit. A network administrator is troubleshooting a connectivity problem on the serial interfaces. The output from the show interfaces command on both routers shows that the serial interface is up, line protocol is down. Given the partial output for the show running-config in the exhibit, what is the most likely cause of this problem?

encapsulation_mismatched.jpg

A. The serial cable is bad.
B. The MTU is incorrectly configured.
C. The Layer 2 framing is misconfigured.
D. The IP addresses are not in the same subnet.

 

Answer: C[/am4show]

Question 7

[am4show have=’p2;’]While troubleshooting a connectivity issue from a PC you obtain the following information:
Local PC IP address: 10.0.0.35/24
Default Gateway: 10.0.0.1

Remote Sever: 10.5.75.250/24

You then conduct the following tests from the local PC:
Ping 127.0.0.1 – Successful
Ping 10.0.0.35 – Successful
Ping 10.0.0.1 – Unsuccessful
Ping 10.5.75.250 – Unsuccessful

troubleshootingconnectivity

What is the underlying cause of this problem?

A. A remote physical layer problem exists.
B. The host NIC is not functioning.
C. TCP/IP has not been correctly installed on the host.
D. A local physical layer problem exists.

 

Answer: D[/am4show]

Question 8

[am4show have=’p2;’]Refer to the exhibit. A host is connected to switch port fa0/3. The host and switch have been fully configured for IP connectivity as shown. However, the indicator LED on switch port fa0/3 is not on, and the host cannot communicate with any other hosts including those connected to VLAN 2 on the same switch. Based on the given information, what is the problem?

indicator_LED_off.jpg

A. switch port fa0/3 is not configured as a trunk port
B. there is a bad cable
C. the switch has been assigned an incorrect subnet mask
D. switch port fa0/3 has been blocked by STP
E. the switch and the host must be in the same subnet

 

Answer: B[/am4show]

Question 9

[am4show have=’p2;’]Refer to the exhibit:

show_ip_interface_brief_ping_request.jpg

Serial0/0 does not respond to a ping request from a host on the FastEthernet0/0 LAN. How can this problem be corrected?

A. Enable the Serial 0/0 interface.
B. Correct the IP address for Serial 0/0.
C. Correct the IP address for FastEthernet 0/0.
D. Change the encapsulation type on Serial 0/0.
E. Enable autoconfiguration on the Serial 0/0 interface.

 

Answer: A[/am4show]

Explanation

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

Question 10

[am4show have=’p2;’]Refer to the exhibit. Why was this message received?

Router#telnet 10.3.1.2
Trying 10.3.1.2 … Open

Password required, but none set
[Connection to 10.3.1.2 closed by foreign host]
Router#

A. No VTY password has been set.
B. No enable password has been set.
C. No console password has been set.
D. No enable secret password has been set.
E. The login command has not been set on CON 0
F. The login command has not been set on the VTY ports.

 

Answer: A[/am4show]

Question 11

[am4show have=’p2;’]Refer to the exhibit. Which two of the output fields could help you determine if a broadcast storm has occurred? (Choose two.)

broadcast_storm.jpg

A. giants
B. no buffer
C. collisions
D. ignored
E. dribble condition

 

Answer: B D[/am4show]

Comments (59) 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 192.168.17.241 – 192.168.17.254 which is decided by the .240 mask

  3. Kristof
    November 21st, 2013

    @romina
    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

    Anyone,

    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 192.168.17.253 just has one more ip, or 192.168.17.254.

    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,
    192.168.17.253/28 is just host-IP,but not network-subnet IP.So,32-28=4,2^4=16(box size=increment). 192.168.17.240 is the network-subnet IP (or lets say subnet ID).
    192.168.17.255 is the broadcast IP for this subnet,and 192.168.17.241-192.168.17.254 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,192.168.17.241 falls to this range.

  10. JamesK
    March 6th, 2014

    Q1 – According to the router, the network is 172.16.1.96 /29, but the server thinks it’s 172.16.1.96 /28. The highest usable address is 172.16.1.102, which includes the server address. So, the server should be able to communicate with NY. It will only have problems with addresses 172.16.1.103 – 172.16.1.111. 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

    hi

  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 192.168.17.240 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 255.255.255.240. convert 240 to binary and we get lowest bit as 16. Therefore increment is 16.

    start address: 192.168.17.0 – 192.168.17.15
    …………………192.168.17.16 (keep adding 16 till u reach address within 192.168.17.253)
    …………………192.168.17.240 – 192.168.17.255 ( – thats the network range) – therefore 192.168.17.241 becomes valid router IP
    …………………192.168.18.0

  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

    29/4/2015

  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 192.168.17.241 for 2nd question,why not default-gateway 192.168.17.1 ??

  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
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  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 172.16.1.96 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: https://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 172.16.1.103 or higher, to .110
    172.16.1.97/29->172.16.1.97-172.16.1.102 are valid IP addresses
    172.16.1.101/28->172.16.1.97-172.16.1.110 are valid IP addresses
    Ok it is a case of overlapping subnets but the TFTP address of 172.16.1.101 should work ok, as the address is covered by the smaller subnet of 172.16.1.97/29.
    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 255.255.255.240.. 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

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

  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

    Q7
    if the host can ping his own IP
    (Ping 127.0.0.1 – Successful
    Ping 10.0.0.35 – 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 https://www.9tut.net/icnd1-100-105/new-icnd1-basic-questions-2 post from Irina

  58. Anonymous
    May 9th, 2018

    hi guys
    I am taking the ICND1 100-105 exam today and have veen studying mostly from 9tut…..I am not full on confidence……