CISCO Certification problems
- 1. What command do you type to save the configuration stored in RAM to NVRAM?
Options- A. Router (config) #copy current to starting
- B. Router #copy starting to running
- C. Router (config) #copy running - config startup - config
- D. Router#copy run start Discuss
Correct Answer: Router#copy run start
Explanation:
To copy the running - config to NVRAM so that it will be used if the router is restarted , use the copy running-config startup-config command in privileged mode (copy run start for short).
- 2. Which command will show you whether a DTE or a DCE cable is plugged into serial 0?
Options- A. sh int s0
- B. sh int serial 0
- C. show controllers s 0
- D. show serial 0 controllers Discuss
Correct Answer: show controllers s 0
Explanation:
The Show controllers serial 0 command will show you whether either a DTE or DCE cable is connected to the interface. If it is a DCE connection, you need to add clocking with the clock rate command
- 3. If you delete the contents of NVRAM and reboot the router , what mode will you be in?
Options- A. privileged mode
- B. Global mode
- C. Setup mode
- D. NVRAM loaded mode Discuss
Correct Answer: Setup mode
Explanation:
If you delete the startup-config and reload the router, the router will automatically enter setup mode. You can also type setup from privileged mode at any time.
- 4. Which of the following commands will configure all the default VTY ports on a router?
Options- A. Router#line vty 0 4
- B. Router (config) #line vty 0 4
- C. Router (config-if)#line console 0
- D. Router(config)#line vty all Discuss
Correct Answer: Router (config) #line vty 0 4
Explanation:
From global configuration mode, use the line vty 0 4 command to set all five default VTY lines
- 5. Which of the following commands sets the secret password to Cisco?
Options- A. enable secret password Cisco
- B. enable secret cisco
- C. enable secret Cisco
- D. enable password Cisco Discuss
Correct Answer: enable secret Cisco
- 6. You type Router#sh ru and receive a % ambiguous command error. why did you receive this message?
Options- A. The command requires additional options or parameters
- B. There is more than one show command that starts with the letters ru.
- C. There is no show command that starts with ru
- D. The command is being executed from the wrong router mode Discuss
Correct Answer: There is more than one show command that starts with the letters ru.
Explanation:
The % ambiguous command error means that there is more than one possible show command that starts with ru. Use a question mark to find the correct command.
- 7. At which layer of the OSI model would you assume the problem is if you type show interface serial 1 and receive the following message? Serial 1 is down, line protocol is down
Options- A. Physical layer
- B. Data Link layer
- C. Network layer
- D. None Discuss
Correct Answer: Physical layer
Explanation:
If you see that a serial interface and the protocol are both down, then you have a physical layer problem. If you see serial 1 is up, line protocol is down, then you are not receiving (Data Link) Keepalives from the remote end.
- 8. Which commands loads a new version of the Cisco IOS into a router?
Options- A. copy flash ftp
- B. copy ftp flash
- C. copy flash tftp
- D. copy tftp flash Discuss
Correct Answer: copy tftp flash
Explanation:
The command copy tftp flash will allow you to copy a new IOS into flash memory on your router.
- 9. 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?
Options- A. You copied the wrong configuraion into RAM
- B. You copied the configuration into flash memory instead
- C. The copy did not override the shutdown command in running-config
- D. The IOS became corrupted after the copy command was initiated Discuss
Correct Answer: The copy did not override the shutdown command in running-config
Explanation:
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 dow and need to be manually enabled with the no shutdown command.
- 10. 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?
Options- A. RAM should be erased and the router restarted
- B. Flash should be erased and the router restarted
- C. NVRAM should be erased and the router restarted
- D. The new configuration should be entered and saved Discuss
Correct Answer: NVRAM should be erased and the router restarted
Explanation:
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.
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