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MANAGING A CISCO INTERNETWORKING

1.B. 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.

2.E. To copy the IOS to a backup host, which is stored in flash memory by default, use the copy

flash tftp command.

3.B. The command traceroute, 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.

4.C. Since the configuration looks correct, you probably didnt 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.

5.B. The show flash command will provide you with the current IOS name and size, and the size

of flash memory.

6.C. Before you start to configure the router, you should erase the NVRAM with the erase

startup-config command, and then reload the router.

7.D. The command copy tftp flash will allow you to copy a new IOS into flash memory on

your router.

8.C. 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 whichfile is running.

9.C. 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.

10.C. If you save a configuration and reload the router and it comes up either in setup mode or as

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blank configuration, chances are you have the configuration register setting incorrect.

11.D. To keep open one or more Telnet sessions, use the Ctrl+Shift+6, then X keystroke

combination.

12.B, D. The best answers 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.

13.A, D. The show hosts command provides information on temporary DNS entries and perma-

nent name-to-address mappings created using the ip host command.

14.A, B, D. The tracert command is a Windows command and will not work on a router! A

router uses the traceroute command.

15.D. 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.

16.C. To see console messages through your Telnet session, you must enter the terminal monitor

command.

17.C. The show version command provides you with the current configuration register setting.

18.E. Although answer A is certainly the best answer, unfortunately answer E will work just fine

and your boss would probably prefer you to use the show cdp neighbors detail command.

19.B, D, E. Before you back up an IOS image to a laptop directly connected to a routers Ethernet

port, make sure the TFTP server software is running on your laptop, that the Ethernet cable is

a crossover, and that the laptop is in the same subnet as the routers Ethernet port, and then

you can use the copy flash tftp command from your laptop.

20.C. The default configuration setting of 0x2102 tells the router to look in NVRAM for the boot

sequence.