| 17. | Which three commands can be used to check LAN connectivity problems on a router?
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Answer: Option A Explanation: The tracert command is a Windows command and will not work on a router! A router uses the traceroute command. |
| 18. | You are unsuccessful in telnetting into a remote device. What could the problem be?
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Answer: Option C Explanation: 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. |
| 19. | What information is displayed by the show hosts command?
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Answer: Option B Explanation: The show hosts command provides information on temporary DNS entries and permanent name-to-address mappings created using the ip host command. |
| 20. | 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?
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Answer: Option B Explanation: 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. |
