InterviewSolution

Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.	What information is displayed by the command?
Answer» The show hosts command provides information on temporary DNS entries and permanent name-to-address mappings created using the ip host command.

2.	You are unsuccessful in telnetting into a remote device. What could the problem be?
Answer» The best answers, the ones you need to remember, are that either an access control list is filtering the Telnet session or the VTY password is not set on the remote device.

3.	Which three commands can be used to check LAN connectivity problems on a router?
Answer» The tracert command is a Windows command and will not work on a router! A router uses the traceroute command.

4.	Which command displays the configuration register setting?
Answer» The show version command provides you with the current configuration register setting.

5.	What should the configuration register value be after you successfully complete the password recovery procedure and return the router to normal operation?
Answer» All Cisco routers have a default configuration register setting of 0x2102, which tells the router to load the IOS from flash memory and the configuration from NVRAM.

6.	You telnet into a remote device and type , but no output from the command is seen. What could the problem be?
Answer» To see console messages through your Telnet session, you must enter the terminal monitor command.

7.	What does the command provide?
Answer» The default configuration setting is 0x2102, which tells the router to load the IOS from flash and the configuration from NVRAM. 0x2142 tells the router to bypass the configuration in NVRAM so that you can perform password recovery.

8.	You save the configuration on a router with the copy running-config startup-config command and reboot the router. The router, however, comes up with a blank configuration. What can the problem be?
Answer» If you save a configuration and reload the router and it comes up either in setup mode or as a blank configuration, chances are you have the configuration register setting incorrect.

9.	Which command will copy the IOS to a backup host on your network?
Answer» To copy the IOS to a backup host, which is stored in flash memory by default, use the copy flash tftp command.

10.	Which command loads a new version of the Cisco IOS into a router?
Answer» The command copy tftp flash will allow you to copy a new IOS into flash memory on your router.

11.	You are troubleshooting a connectivity problem in your corporate network and want to isolate the problem. You suspect that a router on the route to an unreachable network is at fault. What IOS user exec command should you issue?
Answer» The command traceroute (trace for short), which can be issued from user mode or privileged mode, is used to find the path a packet takes through an internetwork and will also show you where the packet stops because of an error on a router.

12.	The configuration register setting of 0x2102 provides what function to a router?
Answer» The default configuration setting of 0x2102 tells the router to look in NVRAM for the boot sequence.

13.	You telnet to a router and make your necessary changes; now you want to end the Telnet session. What command do you type in?
Answer» Since the question never mentioned anything about a suspended session, you can assume that the Telnet session is still open, and you would just type exit to close the session.

14.	The corporate office sends you a new router to connect, but upon connecting the console cable, you see that there is already a configuration on the router. What should be done before a new configuration is entered in the router?
Answer» Before you start to configure the router, you should erase the NVRAM with the erase startup-config command and then reload the router using the reload command.

15.	Which command will show you the IOS version running on your router?
Answer» The best answer is show version, which shows you the IOS file running currently on your router. The show flash command shows you the contents of flash memory, not which file is running.

16.	You need to gather the IP address of a remote switch that is located in Hawaii. What can you do to find the address?
Answer» Although option A is certainly the "best" answer, unfortunately option D will work just fine and your boss would probably prefer you to use the show cdp neighbors detail command.

17.	A network administrator wants to upgrade the IOS of a router without removing the image currently installed. What command will display the amount of memory consumed by the current IOS image and indicate whether there is enough room available to hold both the current and new images?
Answer» The show flash command will provide you with the current IOS name and size and the size of flash memory.

18.	You copy a configuration from a network host to a router's RAM. The configuration looks correct, yet it is not working at all. What could the problem be?
Answer» Since the configuration looks correct, you probably didn't screw up the copy job. However, when you perform a copy from a network host to a router, the interfaces are automatically shut down and need to be manually enabled with the no shutdown command.

19.	If you want to have more than one Telnet session open at the same time, what keystroke combination would you use?
Answer» To keep open one or more Telnet sessions, use the Ctrl+Shift+6 and then X keystroke combination.