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Router Questions

November 10th, 2018 Go to comments

Question 1


The following details the router boot process:
1. The router is powered on.
2. The router first runs Power-On Self Test (POST)
3. The bootstrap checks the Configuration Register value to specify where to load the IOS. By default (the default value of Configuration Register is 2102, in hexadecimal), the router first looks for “boot system” commands in startup-config file. If it finds these commands, it will run boot system commands in order they appear in startup-config to locate the IOS. If not, the IOS image is loaded from Flash . If the IOS is not found in Flash, the bootstrap can try to load the IOS from TFTP server or from ROM (mini-IOS).
4. After the IOS is found, it is loaded into RAM.
5. The IOS attempts to load the configuration file (startup-config) from NVRAM to RAM. If the startup-config is not found in NVRAM, the IOS attempts to load a configuration file from TFTP. If no TFTP server responds, the router enters Setup Mode (Initial Configuration Mode).

For more information about booting process please read our Cisco Router Boot Sequence tutorial.

Question 2


Remember that only route interface can separate broadcast domain (while switch interface separate collision domain) so the broadcast domains are equal to the number of router interfaces, which is four in this case.

Question 3


In short, when powered on the router needs to do:

1. Run POST to check hardware
2. Search for a valid IOS (the Operating System of the router)
3. Search for a configuration file (all the configurations applied to this router)

Question 4


The “exec-timeout” command is used to configure the inactive session timeout on the console port or the virtual terminal. The syntax of this command is:

exec-timeout minutes [seconds]

Therefore we need to use the “exec-timeout 0 10” command to set the user inactivity timer to 10 seconds.

Question 5


An example of the output of the “show ip interface loopback 0” is shown below.


Question 6


When you turn the router on, it runs through the following boot process.

The Power-On Self Test (POST) checks the router’s hardware. When the POST completes successfully, the System OK LED indicator comes on.
The router checks the configuration register to identify where to load the IOS image from. A setting of 0×2102 means that the router will use information in the startup-config file to locate the IOS image. If the startup-config file is missing or does not specify a location, it will check the following locations for the IOS image:

1. Flash (the default location)
2. TFTP server
3. ROM (used if no other source is found)

The router loads the configuration file into RAM (which configures the router). The router can load a configuration file from:

+ NVRAM (startup-configuration file)
+ TFTP server
If a configuration file is not found, the router starts in setup mode.

Question 7


The “show ip interface brief” command can be used to view a summary of the router interfaces. This command displays the IP address, interface status, and additional information. An example of the “show ip interface brief” command is shown below. We can see the interface status of E0/0 is “up/up”.


Question 8


By default, the Cisco IOS CLI has two privilege levels enabled, level 1 and level 15.
+ User EXEC mode (privilege level 1): provides the lowest EXEC mode user privileges and allows only user-level commands available at the Router> prompt.
+ Privileged EXEC mode (privilege level 15): includes all enable-level commands at the Router# prompt. Level 15 users can execute all commands and this is the most secured and powerful privilege level.

However, there are actually 16 privilege levels available on the CLI, from 0 to 15 and you can assign users to any of those levels. Zero-level access allows only five commands -logout, enable, disable, help, and exit. User level (level 1) provides very limited read-only access to the router, and privileged level (level 15) provides complete control over the router.

Question 9


To reset the password we can type “confreg 0x2142” under rommon mode to set the configuration register to 2142 in hexadecimal (the prefix 0x means hexadecimal (base 16)). With this setting when that router reboots, it bypasses the startup-config.

Question 10

Question 11


The “no logging console” turns off logging to the console connection (it is turned on by default) and it is often used if the console received large amount of logging output. But this command is not recommended in normal configuration -> A is not correct.

The command “logging host ip-address” instructs the device to send syslog messages to an external syslog server -> B is correct.

The “show logging | redirect flashioutput.txt” command will put the text file in the router flash memory because we did not specify a remote location (like tftp) -> D is not correct.

The command “snmp-server enable traps syslog” instructs the device to send syslog messages to your network management server as SNMP traps instead of syslog packets. This command itself does not enable debug output to a remote location -> E is not correct.

By default, Cisco IOS does not send log messages to a terminal session over IP, that is, telnet or SSH connections don’t get log messages. But notice that console connections on a serial cable do have logging enabled by default. The command “terminal monitor” helps logging messages appear on the your current terminal session. First we don’t think this is a correct answer but after reading the question again, we believe it is a suitable one as a Telnet/SSH session may be considered a “remote location” -> C is correct.

Question 12


Other choices are surely incorrect so only “physical access” answer is the correct one. In order to recover a password on a Cisco router, the first thing you have to do is either switch off or shut down the router. For more information about this process, please read http://www.cisco.com/c/en/us/support/docs/routers/2800-series-integrated-services-routers/112033-c2900-password-recovery-00.html

Question 13


During the copy process, the router asked “Erasing flash before copying? [confirm]” and the administrator confirmed (by pressing Enter) so the flash was deleted.

Note: In this case, the flash has enough space to copy a new IOS without deleting the current one. The current IOS is deleted just because the administrator wants to do so. If the flash does not have enough space you will see an error message like this:

%Error copying tftp:// c1600-k8sy-mz.l23-16a.bin (Not enough space on device)

Question 14

Question 15


The correct syntax of the “boot” command is “boot system” path. In which the popular for path can be:
+ flash
+ rom
+ tftp
+ ftp
+ IP address (IP address of the server containing the system image file)

Therefore answers A, B, C are correct.

Question 16


To reset the password we can type “confreg 0x2142” under rommon mode to set the configuration register to 2142 in hexadecimal (the prefix 0x means hexadecimal (base 16)). With this setting when that router reboots, it bypasses the startup-config.

Comments (28) Comments
  1. Mendira
    May 3rd, 2017

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  2. davegi
    May 22nd, 2017

    why only paypal?

  3. Anonymous
    June 9th, 2017

    hi . the answer for question 12 is diffrent by the answer in quizz!!!!!!!! which one is correct ?

  4. Wonder
    June 13th, 2017

    Please let me know the correct ans for qn 12.

  5. Angelo
    June 13th, 2017
  6. Becky
    July 30th, 2017

    For Q8, Answer is A. Level 0 is most secured

  7. nickaro
    August 11th, 2017

    In Q.9 there are 2 possible correct answers:

    B. access router physically
    D. Type confreg 0x2142 at the rommon 1

    Though the first thing you must do to reset password is to access physically to the router.
    So, I think, answer B should be the correct one.

  8. Altaie
    August 13th, 2017


    in all cases, you are going to be required to access the router physically in order to reset the password, check this link:


    so the answer to this questions is (D) it requires a physical access to the router.

    August 28th, 2017

    For Question 7 , there are two options
    A) show ip int brief
    B) show interfaces

    both will tell you the status of the link plus the show interfaces will tell you more details, so both are good. Please comment.

    Thank you

    Imran Shahid

  10. Kelly
    September 12th, 2017

    Pls can someone send me CCNA Routing and switching latest dumps

    Email – kellysilver2015 @ yahoo dot com

  11. mashith
    October 10th, 2017


    Kindly send the latest dump for ccna R&S

  12. mashith
    October 10th, 2017

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  13. mashith
    October 10th, 2017

    mashith81 gmail dot com

  14. sadeq
    October 30th, 2017

    Kindly send the latest dump for ccna R&S
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  15. sadeq
    October 30th, 2017

    Kindly send the latest dump for ccna R&S
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    {email not allowed}

  16. shlomo
    December 14th, 2017

    Q. 7
    Both commands Show ip Interface Brief
    and Show interface will show you the status of the interface

  17. cthelite
    January 16th, 2018

    I’m surprised there are not more comments about #8… I can’t see the MOST privileged or MOST allowed command Level 15 is the most SECURED? It would be the most OPEN and LEAST SECURED? Level 0 is the MOST SECURED allowing the least access to the router. From cisco.com “Up to 16 privilege levels can be configured, from level 0, which is the most restricted level, to level 15, which is the least restricted level.” So is this question on the CCNA test? And what is the correct “cisco” answer?

  18. @9tut see question 8
    February 13th, 2018

    cthelite is correct. most restricted privilege level is 0 so it is most secured. level 15 is least restricted with full permissions. so it is least secured

  19. Das
    February 28th, 2018

    Level 15 is correct. Only an admin can get on to that level. You can configure and achieve anything from that level. That is why it is the most secure level.

  20. cthelite
    February 28th, 2018

    Thanks Das. It’s basackwards, but OK. I’ll go with Level 15 for the exam.

  21. Lamar
    April 23rd, 2018

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  22. NAN
    August 9th, 2018

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  23. Q15
    October 17th, 2018

    “boot system rom” would work, but Answer B:
    Router(config)#boot system rom c7301-advipservicesk9-mz.124-24.T4.bin
    does not work, because there is no IOS in ROM.

    Answer D would work from rommon:
    rommon 1 > boot flash:c180x-adventerprisek9-mz-124-6T.bin

    Mybe it’s a typo.

  24. Duncan ojijo
    January 21st, 2019

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  25. Roy
    March 29th, 2019

    why For Q8, Answer 15 is most secured is correct ?

  26. Q.6
    April 25th, 2019

    In my opinion answer for Q.6 is “C”.

  27. Mike
    June 23rd, 2019

    Hey guys,

    I´m taking the CCNA test next tuesday,
    could someone please send me the latest dump for CCNA 200-125?
    I will really appreciate it.
    mchlhidalgo at g mail com

  28. Kivo
    August 25th, 2019

    Q.8 – I guess the question is about the most secured (protected) level, not most secure level. So, it’s 15.

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