You have your laptop directly connected into a router's Ethernet port. Which of the following are among the requirements for the copy flash tftp command to be successful?
TFTP server software must be running on the router.
TFTP server software must be running on your laptop.
The Ethernet cable connecting the laptop directly into the router's Ethernet port must be a straight-through cable.
The laptop must be on the same subnet as the router's Ethernet interface.
The copy flash tftp command must be supplied the IP address of the laptop.
Before you back up an IOS image to a laptop directly connected to a router's 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 router's Ethernet port, and then you can use the copy flash tftp command from your laptop.
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.
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?
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.
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 exitto close the session.
What should the configuration register value be after you successfully complete the password recovery procedure and return the router to normal operation?
All Cisco routers have a default configuration register setting of0x2102, which tells the router to load the IOS from flash memory and the configuration from NVRAM.
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.
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?
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.
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?
Before you start to configure the router, you should erase the NVRAM with the erase startup-configcommand and then reload the router using the reloadcommand.
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.
Issue the show cdp neighbors detail command on the router connected to the switch.
Although option A is certainly the "best" answer, unfortunately option D will work just fine and your boss would probably prefer you to use theshow cdp neighbors detail command.
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?
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?
The copy did not override the shutdown command in running-config.
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.
