Home > ICND1 – Basic Questions

ICND1 – Basic Questions

June 26th, 2017 in ICND1 100-105 Go to comments

Question 1


CSMA/CD stands for Carrier Sense Multiple Access with Collision Detection. In an Ethernet LAN, before transmitting, a computer first listens to the network media. If the media is idle, the computer sends its data. If the media is not idle (another station is talking), the computer must wait for some time.

When a station transmits, the signal is referred to as a carrier. Carrier Sense means that before a station can send data onto an Ethernet wire, it have to listen to see if another “carrier” (of another station) is present. If another station is talking, this station will wait until there is no carrier present.

Multiple Access means that stations can access the network at any time. It is opposed to Token-Ring network where a station must have the “token” so that it can send data.

Although Carrier Sense help two stations not send data at the same time but sometimes two stations still send data at the same time! This is because two stations listen for network traffic, hear none, and transmit simultaneously -> a collision occurs and both stations must retransmit at some later time. Collision Detection is the ability of the media to detect collisions to know that they must retransmit.

Basically, the CSMA/CD algorithm can be summarized as follows:

+ A device that wants to send a frame must wait until the LAN is silent (no one is “talking”)
+ If a collision still occurs, the devices that caused the collision wait a random amount of time and then try to send data again.

Note: A switch separates each station into its own collision domain. It means that station can send data without worrying its data is collided with the data of other stations. It is as opposed to a hub which can cause collision between stations connected to it.

Question 2


Only two commands “show interfaces” and “show ip interface brief” reveal the status of router interfaces (up/up, for example).

The outputs of two commands are shown below:



Question 3


HTTP is based on TCP connection so a TCP connection must be established first between the workstation and the web server.

Question 4


Hubs do not separate collision domains so if hub is used in the topology above, we will have only 1 collision domain. Switches do separate collision domains so if hubs are replaced by switches, we would have 22 collision domains (19 collision domains for hosts and 3 collision domains among three switches. Please notice that the WAN (serial) connection is not counted as a collision (or broadcast) domain.

Question 5


A broadcast storm can cause congestion within a network. For more information about broadcast storm please read my STP tutorial.

Question 6


Before a host can send ICMP (ping) packets to another device, it needs to learn the MAC address of the destination device so it first sends out an ARP Request. In fact, the first ping packet is dropped because the router cannot create a complete packet without learning the destination MAC address.

Question 7


The “show running-config” command displays active configuration in memory.

Question 8

Question 9

Question 10


Full-duplex communication allows both sending and receiving of data simultaneously. Switches provide full-duplex communication capability. Half-duplex communication only allows data transmission in only one direction at a time (either sending or receiving).

Comments (100) Comments
Comment pages
1 2 3 9 326
  1. Shaun L
    October 19th, 2013

    AWESOME!! How close are these to the actual exam from the 100-101 question bank? Also, are there additional questions that aren’t in here?

  2. Shaun L
    October 19th, 2013

    Just wanted to be more clear on prior question. Do I need to go over the question bank from prior exam version as well as this new exam? Also, has the labs changed at all from the prior exam version? If so, how soon will that be on here? Thanks again and great job!

  3. kamal
    October 19th, 2013

    I wonder do new exam don’t have lab sim, only question and selections of answer, so cisco have remove any sin lab?

  4. jp.ccna
    October 24th, 2013

    There are Lab Sims. If you go to examcollection.com and read the responses to the vce downloads, you will see information on the types of sims people are getting.

  5. shuiyy
    October 25th, 2013
  6. jp.ccna
    October 29th, 2013

    I tested 10-25-13. There were 3 sims. None of them required configuration. The only commands I had to run were show run and show ip ospf interface

  7. r4 logiciel
    October 31st, 2013

    Very very good prepared post. It will be supportive to anybody who makes use of it, which includes me. Maintain performing what you are undertaking a?? cana??r hold out to read far more posts.
    r4 logiciel http://achat-nintendo-3ds-xl.youaresomebody.org

  8. Shaun L
    November 8th, 2013

    @9tut. How many of these questions of the 100-101 are current for exam? See throughout bank of questions, that most of these are from recent version of exam.

  9. Anonymous
    November 12th, 2013

    is this Really the questions of the exam 100-101?

  10. tom
    November 23rd, 2013

    i’ve licenses for pass4sure engines. i bought them for 126 and would sell for 50. just wanna share my cost. if anyone interested email me at zatia10@yahoo.com

  11. Stephen H
    December 10th, 2013

    I took the exam on 12-06-13 and passed with 867. The questions are nearly identical to the ones posted here. No IPv6 on the exam at all. Sims consist of only “show” commands. If you know all the questions here, you will pass.

  12. tendy
    December 20th, 2013

    i took the exam today nd iscored 986, thnx 9tut

  13. CCENT someday
    December 23rd, 2013


    Question 4

    Refer to the exhibit. If the hubs in the graphic were replaced by switches, what would be virtually eliminated?

    A. broadcast domains
    B. repeater domains
    C. Ethernet collisions
    D. signal amplification
    E. Ethernet broadcasts

    On another website I’ve read it was (E) Ethernet broadcasts. How can I tell the difference? Both sound good.

  14. Anadi
    January 20th, 2014

    having CCENT @ 22 Jan……Wish me luck guys hope 9tut helps….

  15. CiscoVanPrep
    January 21st, 2014

    Hey Anadi, Good Luck! nail the exam.

  16. ANDILE
    January 24th, 2014


  17. 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!

  18. Donathien Lagloire
    January 31st, 2014

    je passe l’exam le 8 fevrièr quels sont les labsim?

  19. What to Ask
    February 2nd, 2014

    Can anyone please tell me if the content on here are the latest and up to date material? having exam soon

  20. Mahbub
    February 2nd, 2014

    Is it enough to practice this webpage exam for ICND1 ? i like to take the exam next week. please give me some hints.

  21. Mahbub
    February 8th, 2014

    Thank God. I Passed today ICND1 960/100. From this section I got 2, 3, 5, 6, 7, 9

  22. xxz
    March 14th, 2014

    Dear 9tut,

    Where are the old ICND1 contents? More specifically wireless questions and their explanations..

  23. 9tut
    March 15th, 2014

    @xxz: We are sorry but we have removed the old ICND1&2 content so that our readers will not be confused when learning for the new exams.

  24. Sherick
    March 20th, 2014

    Anyone can send me an updated dumps? send it to my email please. sherickmanalang@yahoo.com.ph


  25. velex
    March 23rd, 2014

    Can i have the new icnd1 dump. I will take the exam pretty soon. velexd@yahoo.com

  26. net warrior
    March 24th, 2014

    any chance of getting the new icnd

  27. bemybeach
    March 26th, 2014

    Hello Just Failed my ICND1 exam today 🙁 I really did poorly on “Operation of IP Data Networks” received 33% on this portion and is where I failed the exam. My problem is that I really do not remember these questions on the exam, is there a Specific area of this site dedicated to this?

    Failed with 775 and needed 804 to Pass, so I am back to the books, if anyone has any tips on this area of the test please share bemybeach@yahoo.com


  28. Need Help…
    April 1st, 2014

    Can i have the new icnd1(100-101) for dump. I will take the exam pretty soon.(a couple of weeks) Please email me @ rob33414@yahoo.com

    any info will help Thank You .

  29. Mal
    April 18th, 2014

    Jose, if you get the pdf icnd1 dump can you send it to me ? Malvo87@yahoo.com

  30. niRAV
    April 19th, 2014

    I have in 2 days .. if u guys dumps for CCNA 100-101 can please email me at nirav_patel7725@yahoo.in

  31. Charley
    April 22nd, 2014

    can someone please send me the pdf icnd1 dump at mcharleysr@msn.com

  32. Rizzob
    April 23rd, 2014

    Out of this list of basic questions there was
    1, 2, 3, 4, 5, 7, 8, 9, 10 on the actual Exam. Took it really recently 🙂
    So whoever keeps asking about the actual questions……the answer is YES.

  33. fez
    April 24th, 2014

    Passed my 100-101 exam today and Q 1,2,3,4,6,7,8,9,10 was there today… all the best every one

  34. Willie
    April 24th, 2014

    can someone please send me the pdf icnd1 dump at godswillayewah@yahoo.com

  35. Rain
    April 28th, 2014

    Hello, Can someone please send me dumps for ICND1 new, and ICND2 on biren_999@yahoo.com. really need pass4sure and examcollections dumps,, thanks in advance. 🙂

  36. The Master
    April 30th, 2014

    I took the exam today and most of the questions were from 9tut. I got 973

  37. mk2
    May 5th, 2014

    can any help me with ospf 6 router questions

  38. chi
    May 10th, 2014


  39. Jack
    May 11th, 2014

    Has anyone had IPv6 questions on their exams????

  40. 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/

  41. josec
    May 20th, 2014

    can someone send latest dumps to me, test next week jcristobal74@outlook.com

  42. josec
    May 20th, 2014

    dumps for ICND1, that is.

  43. Ivo
    May 26th, 2014

    Can someone send me the icnd1 pdf dump file? vdlaar@yahoo.com I want to do the test ASAP. PLease make my day. Thanks a lot.

  44. Anonymous
    May 29th, 2014

    Guys you should get free dumps and many other helping materials from [ http://adf.ly/o7ba3 ]
    Its a direct and safe download and the download speed is ultra high.
    Also the dumps is super easy to download.

  45. Nam-Joe
    June 11th, 2014


    I am taking ICND1 exam next week please send me latest ICND1 dumps and VCE pro or study guide on my email address bacson92@yahoo.com

    Thank you in advanced;

  46. nili
    June 11th, 2014

    Guys you should download dumps and many other helping materials from [ http://adf.ly/o7ba3 ]
    Its a direct and safe download and the download speed is ultra high.
    Also the dumps is super easy to download.

  47. hary
    June 15th, 2014

    please any 1 send me icnd1 dumps in my email…. i am not able to download from websites due to some techincal prob. thank u.

  48. hary
    June 15th, 2014
  49. Anonymous
    June 20th, 2014

    Hi guys, please send me the latest ICND1 dumbs, I’m not able to download it. My email address mustafa_sabah22@yahoo.com

    Thank you

  50. zehd
    June 21st, 2014

    can you send me the dump for the CCNA exams.. lourdesangeles_06@yahoo.com will ake the exam by July 2014

  51. Sandy
    June 25th, 2014

    Can someone please send the latest dumps to me as well….

    Thanks in advance!!!

    Also, someone who has recently given the examination can please share their views, it will be great.


  52. Karim
    June 29th, 2014

    I would appreciate any kind person to send me the dumps for ICND1, thanks

  53. Karim
    June 29th, 2014

    please send to ksalam1234@yahoo.co.uk

  54. nicolas
    June 29th, 2014

    I would appreciate any kind person to send me the dumps for ICND1, thanks

  55. Anonymous
    July 1st, 2014

    I would appreciate any kind person to send me the dumps for ICND1 to cferguson1015@yahoo.com, thanks

  56. Kevin
    July 5th, 2014

    Hi are these questions on the new ICND1 exam just alike

  57. Benjamin
    July 18th, 2014

    Can someone please send the latest ICDN1 and ICND2 dumps to my email ikpo4hu@yahoo.com. I’ll be very grateful.

  58. Benjamin
    July 21st, 2014

    Are these questions based on the latest icnd1 topics. Please send your reply to ikpo4hu@yahoo.com. Thanks!

  59. Macwani
    July 24th, 2014

    I would appreciate if someone will send me the Dumps for New ICND1 100-101, thanks!!

  60. jskizel12
    July 24th, 2014

    I would be so grateful if someon can please send the latest ICDN1 and ICND2 dumps to my email iscott3@heidelberg.edu. I’ll be very grateful. Thanks so much 9tut and happy I subscribed to the membership!

  61. jskizel12
    July 24th, 2014

    That email is jscott3@heidelberg.edu ^^^^ sorry about that!!

  62. jskizel12
    July 25th, 2014

    I would be so grateful if someon can please send the latest ICDN1 and ICND2 dumps to my email jscott3@heidelberg.edu. I’ll be very grateful

  63. jskizel12
    July 25th, 2014

    I would be so grateful if someon can please send the latest ICDN1 and ICND2 dumps to my email jscott3@heidelberg.edu. I’ll be very grateful

  64. albert
    August 6th, 2014

    preparing to take icnd1 next week can i get some dumps please at alberthmckenzie@yahoo.com

  65. albert
    August 7th, 2014

    thanks for all the help guys but needall the material i cant gt

  66. Anonymous
    August 9th, 2014

    Can some please email me the latest dumps ICND1 @ carlpierce@yahoo.com

  67. Ahl
    August 11th, 2014

    Hi I need the latest dumps at ICND1 please send it at blue_gem0000@yahoo.com

  68. Jon
    August 14th, 2014

    I need ICND1 dumps please jmcfeely10@yahoo.com

  69. Anonymous
    August 15th, 2014

    Hi please send me the latest dumps at Atlastros@yahoo.com. Thanks

  70. CCENT Student
    August 15th, 2014

    Took my test today, variations of questions 1,2,4,5,8,9, an 10 were on there. Used Cisco Press CCENT book, 9tut, and packet tracer to study. Good luck!

  71. Loose1
    August 16th, 2014

    Hi please send me the latest dumps at abloose@yahoo.com. Thanks

  72. sparJ90
    August 17th, 2014

    can anyone send me the latest dumps for ICND1 i have my test on monday so need it asap would appreciate the help!!!!

  73. sparJ90
    August 17th, 2014

    PS: email address – spar_joshi@yahoo.co.in

  74. Jibran
    August 18th, 2014

    Hello… you may get the dumps from http://www.getfreedumps.com

  75. Carl Johnson
    August 19th, 2014

    Hi, Can somebody send me the latest ICND1 Dumps please to carljohnson1983@me.com

  76. alvin
    August 21st, 2014

    please send me more ICND1 dumps …

    email to alvin.chan@tollgroup.com

  77. Ghayth
    August 22nd, 2014

    Passed 933 of 1000 the dumps are awesome!!!

  78. Anonymous
    August 23rd, 2014

    HEY Ghayth…..

    what simulations came there ? Is (VTP simulation) still exits in 200-120

  79. John Wekal
    August 23rd, 2014

    For ICND1 😀

  80. Anonymous
    August 24th, 2014

    I just took the ICND1 and passed with a 900 score. Here is the tips that i can give you that i was looking for but didnt really find on other comments.

    1. Read all the questions on 9tut 60-70 percent of the questions i encoutered here were on the test in some variation and 40-50 percent out of the 60-70 were exacly the SAME questions.
    2. Do the simulations, i received the SAME OSPF simulation on the test and a security simlet.
    3.The test was easier than i imagined but i studied Odums book cover to cover did all practice tests included with book. Purchased measure up questions (in retrospect these are much harder than actual test questions, which prepared me well). and used this site.
    4. this was my first cisco test and it was rather easy(subjective analysis)
    5. USE this website
    6. USE this webiste
    7. If you use this website you will have a MUCH higher chance of passing!!!

    Victor out,

  81. sanjay
    August 26th, 2014

    yahooooooooooo…today i passed ccnt 100-101 ..960 for 1000 ….1thanks 9tut .keep helping

  82. Kay
    August 28th, 2014

    Could anyone send me tips on how to pass the CCENT 100-101. I would appreciate the dumps too. Please send to kemolala19@yahoo.co.uk . Thank you.

  83. N8
    August 29th, 2014

    Passed with 986/1000 08/28/2014. Used 9TUT and exam collection susan’s 124 Q is valid. I used Cisco Press Official Cert Guide. Exam Collection is a great site to get banks. Always look at the ones with the most votes and read comments helps to keep from getting a bad dump. Dont just memorize know why the answer to the question question it what it is and why the others are not.

  84. baa
    August 29th, 2014

    pls send me dumps for ICND1 too . miata_121@yahoo.com

  85. Mryeah
    August 30th, 2014

    please send me dumps for icnd1 rjohnson2590@yahoo.com

  86. Nasir Ahsan
    September 1st, 2014

    anyone who just took the exam can you please send me the latest material/dumps im taking my exam on sep 12. thanks in advance

  87. Giuseppe
    September 4th, 2014

    Please send me the latest dumps for ICND1 and ICND2. giuseppe.greco@31gennaio.net

  88. Sara
    September 5th, 2014

    please send me icnd1 and icnd2 dumps Thanks

  89. Saudi Mizer
    September 6th, 2014

    Took exam yesterday, questions 1, 2, 3,4,5,7,9 were on it. All the question i had on my exam are on 9tut (some MAC addresses & ip addresses were different). Thanks 9tut for the practice questions

  90. Mark
    September 10th, 2014

    My CCENT exam is this Monday morning, I would really appreciate your ICND1 dumps please. Thanks!

  91. navidt
    September 12th, 2014

    hi, please send me dumps for ICND1

  92. Anonymous
    September 14th, 2014

    Hi Guys anyone that have dumps please assist.

  93. Carl
    September 15th, 2014

    Morning, Can anyone please send me the ICND1 Dumps please. Thanks in advance. carljohnson1983@me.com

  94. Anonymous
    September 15th, 2014

    send me dumps please. dollari40@live.com.

  95. Ivan
    September 21st, 2014

    Hi guys can you please email me the latest dumps of ICND1. ivant_t@yahoo.com

  96. Sevindu
    September 22nd, 2014

    Passed with 960/1000 21/09/2014 yesterday , all most all the questions from 9 tut .net are there!! but there is a new lab sim also!! configurations are to be done with ospf routing protocols

  97. malvo87@yahoo.com
    September 23rd, 2014

    Please send me the latest ICND1 dumps..
    Thanks in advance.

  98. FABIEN
    September 25th, 2014


  99. matt
    September 28th, 2014

    Could I please get the latest ICND1 vce dump from someone? Thank you very much. mas@unseen.is

Comment pages
1 2 3 9 326