CCNA – Cisco IOS Questions
Here you will find answers to Cisco IOS Questions
Note: If you are not sure about the boot sequence of a router/switch, please read my Cisco Router Boot Sequence Tutorial.
Question 1
How does using the service password encryption command on a router provide additional security?
A. by encrypting all passwords passing through the router
B. by encrypting passwords in the plain text configuration file
C. by requiring entry of encrypted passwords for access to the device
D. by configuring an MD5 encrypted key to be used by routing protocols to validate routing exchanges
E. by automatically suggesting encrypted passwords for use in configuring the router
Answer: B
Explanation
By using this command, all the (current and future) passwords are encrypted. This command is primarily useful for keeping unauthorized individuals from viewing your password in your configuration file.
Question 2
Refer to the diagram. What is the largest configuration file that can be stored on this router?
|
R# show version ROM: System Bootstrap. Version 12.3(8r)T8, RELEASE SOFTWARE (fc1) N-East uptime is 5 days, 49 minutes Cisco 1841 (revision 5.0) with 114688K/16384K bytes of memory. Configuration register Is 0×2102 R# |
A. 191K bytes
B. 16384K bytes
C. 31369K bytes
D. 114688K bytes
Answer: A
Explanation
Non-volatile RAM (NVRAM) holds the router’s startup configuration file. NVRAM contents are not lost when the router is powered down or reloaded.
Question 3
Which command shows system hardware and software version information?
A. show configuration
B. show environment
C. show inventory
D. show platform
E. show version
Answer: E
Question 4
Refer to the exhibit. If number 2 is selected from the setup script, what happens when the user runs setup from a privileged prompt?
|
[0] Go to the IOS command prompt without saving this config. Enter your selection [2]: |
A. Setup is additive and any changes will be added to the config script.
B. Setup effectively starts the configuration over as if the router was booted for the first time.
C. Setup will not run if an enable secret password exists on the router.
D. Setup will not run, because it is only viable when no configuration exists on the router.
Answer: A
Question 5
Which command shows your active Telnet connections?
A. show sessions
B. show cdp neighbors
C. show users
D. show queue
Answer: A
Explanation
The “show users” shows telnet/ssh connections to your router while “show sessions” shows telnet/ssh connections from your router (to other devices). The question asks about “your active Telnet connections”, meaning connections from your router so the answer should be A.
Question 6
Which command can you use to determine the cisco ios feature set on a cisco router?
A. show version
B. dir flash:include ios
C. show environment
D. show diag
E. show inventory
Answer: A
Question 7
A system administrator types the command to change the hostname of a router. Where on the Cisco IFS is that change stored?
A. NVRAM
B. RAM
C. FLASH
D. ROM
E. PCMCIA
Answer: B
Explanation
The change is only reflected in the running-config on RAM. It can be lost if we reset the router without saving it.
Note: Cisco IFS means “Cisco IOS File System”
Question 8
Before installing a new upgraded version of the IOS, what should be checked on the router, and which command should be used to gather this information? (Choose two)
A. the amount of available ROM
B. the amount of available flash and RAM memory
C. the version of the bootstrap software present on the router
D. show version
E. show processes
F. show running-config
Answer: B D
Explanation
When upgrading new version of the IOS we need to copy the IOS to the Flash so first we have to check if the Flash has enough memory or not. Also running the new IOS may require more RAM than the older one so we should check the available RAM too. We can check both with the “show version” command.
Question 9
Refer to the exhibit. A network administrator configures a new router and enters the copy startup-config running-config on the router. The network administrator powers down the router and sets it up at a remote location. When the router starts, it enter the system configuration dialog as shown. What is the cause of the problem?
|
— System Configuration Dialog — Would you like to terminate autoinstall? [yes]: Press RETURN to get started! |
A. The network administrator failed to save the configuration.
B. The configuration register is set to 0×2100.
C. The boot system flash command is missing from the configuration.
D. The configuration register is set to 0×2102.
E. The router is configured with the boot system startup command.
Answer: A
Explanation
The “System Configuration Dialog” appears only when no startup configuration file is found. The network administrator has made a mistake because the command “copy startup-config running-config” will copy the startup config (which is empty) over the running config (which is configured by the administrator). So everything configured was deleted.
Note: We can tell the router to ignore the start-up configuration on the next reload by setting the register to 0×2142. This will make the “System Configuration Dialog” appear at the next reload.
Question 10
Refer to the exhibit. What can be determined about the router from the console output?
|
1 FastEthernet/IEEE 802.3 interface(s) ———-System Configuration Dialog ———- Would you like to enter the initial configuration dialog? [yes/no]: |
A. No configuration file was found in NVRAM.
B. No configuration file was found in flash.
C. No configuration file was found in the PCMCIA card.
D. Configuration file is normal and will load in 15 seconds.
Answer: A
Explanation
When no startup configuration file is found in NVRAM, the System Configuration Dialog will appear to ask if we want to enter the initial configuration dialog or not.
Q1 was there in today’s exam.
@canand how’s the exam? did you pass?
hiii
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Dear sir, I am very happy to know this site. I just take CCNA exam, but I fail down so i want you to help me to get CCNA certification. And I will take Exam again on this 11th/03/2012. I hope that all of can help me.
Thank you.
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@ sothea How was ur Exam…??
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Hi gyz…
Qns 5 above. Which command shows your active Telnet connections?
A. show sessions
B. show cdp neighbors
C. show users
D. show queue
How come when I type ‘show sessions’ when i telnet to a router i get a ‘no open connections message’
But show users show my telnet sessions..
Please explain xallant
@Kenna
Hi, I think that, when you log on a Router from Telnet, you must enable terminal monitor in order to see global datas on IOS.
R#terminal monitor
Read this http://etherealmind.com/ios-terminal-monitor-on-off-logging-to-your-terminal/
Q1, Q2 in today’s exam. 9tut is coolest
I’m taking the CCNA test in March 29th, please send me the latest dumps to wallyberto@gmail.com, thanks
I’m also confused about Q5 and active Telnet connections – question is WHICH COMMAND shows it, and I also tried – it is #show users command.
Even, after #term monitor enabled, it is the same.
IMPORTANT THIS QUESTION HAS COME ON CCNA EXAM
How does using the service password encryption command on a router provide additional security?
A. by encrypting all passwords passing through the router
B. by encrypting passwords in the plain text configuration file
C. by requiring entry of encrypted passwords for access to the device
D. by configuring an MD5 encrypted key to be used by routing protocols to validate routing exchanges
E. by automatically suggesting encrypted passwords for use in configuring the router
kenna,if u telnet from router r1 to r3,then with #show sessions command will show telnet sessions frm r3,it will not shw ses. Frm r1.
So solution to this ,u have to terminate the telnet session to r3(by pressing cntr+Shft+6 at a time,then leave it at a time,after that press key ‘x’) then issue #show sessions command,it will show telnet sessions.
kenna,if u telnet from router r1 to r3,then with #show sessions command will show telnet sessions frm r3,it will not shw ses. Frm r1.
So solution to this ,u have to terminate the telnet session to r3(by pressing cntr+Shft+6 at a time,then leave it at a time,after that press key ‘x’) then issue #show sessions command,it will show telnet sessions.
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samer hijazin
I will be taking my CCNA 640-802 exam in 2 day ,can someone please send me the latest dumps? much appreciated
Yes. i am also doubtful about Q5. I have same comments as described by Mohit 2nd january 2012. Love u Mohit
hi,
can anyone send me the latest dumps? I’ll take my CCNA exam next friday…
thanks,
andrew.letcon@gmail.com
Kindly explain Q4
Q1 was in my exam
@all
Q4 – The “Setup” command can be issued at any time, even after a config is present. If you add a new interface to a router, you can run the setup command and configure just the options required on that interface. The config will then be MODIFIED by adding the elements you have just specified, but the rest of the config will remain untouched.
Q5 – Ambiguous question. If it came up in an exam I would write a comment saying so. You need to know the “point of view” of the Telnet session – are you looking at session INTO the router, or sessions OUT OF the router
If you Telnet into a router, the “Show Users” command will show this (and other) inbound LINES to the router.
However, if you are on a router (R1), then Telnet to another device (R2) and suspend the session (press Ctrl+Shift+6, then x), you will return to the initial prompt (R1) but an outgoing Telnet session to R2 will still be active. The “Show Sessions” command will then show these active session.
References for above
Q4 – http://www.cisco.com/en/US/docs/ios/fundamentals/configuration/guide/cf_setup.html#wp1075314
Q5 – http://www.cisco.com/en/US/docs/ios/12_1/dial/command/reference/drdshonx.html
@xallax
Can you explain why in this question the TFTP server has an incorrect subnet mask?
http://postimage.org/image/t9k89m653/
@xallax
Another IOS question. On this how was the Manchester router serial IP address determined to be 10.1.1.1 when the only thing show cdp command showed was the entry ip address of the London router which was 10.1.1.2? How was Serial 0/0 determined where the CDP information was received from when all Serial ports we see mentioned in the exibit are Serial 10/0 and Serial 0/1 ?
@xallax
oops forgot the question image link in my previous post.
http://s15.postimage.org/52kbcwoez/Advanced_IOS.jpg
Hi raj, there its mentioned that Subnet mask for link between router is 255.255.255.252 so the other end ip should be 10.1.1.1 only :)
Which command shows your active Telnet connections?
A. show sessions
B. show cdp neighbors
C. show users
D. show queue
The key word here guys is Active,,also check to see what software rev. you are at on your router, some versions work differently, but the “show users” command should show you who is allowed access and “show sessions” command is the one that shows you who is ACTIVE with a telnet session.
@raj
regarding your first question
look at the router interface.
it is 192.168.15.49/28
it resides on the .48~.63 subnet
the tftp server is 192.168.15.62/26
it resides on the .0 ~ .63 subnet
they overlap instead of being one of the same
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These dumps are VERY accurate! If you know what you’re doing with Cisco equipment, and use these as practice questions you will pass your CCNA.
I passed my CCNA today with an 894. Good luck everyone!
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careercert.info
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Thanks @janypogs…