1. Which command will show you whether a DTE or a DCE cable is plugged into serial 0?
Correct Ans:show controllers serial 0
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.
You set the console password, but when you display the configuration, the password doesn't show up; it looks like this:
Line console 0
Exec-timeout 1 44
What cause the password to be stored like this?
Correct Ans:service password-encryption
The command service password-encryption, from global configuration mode, will encrypt the passwords.
3. How many simultaneous Telnet sessions does a Cisco router support by default?
Cisco routers, if they do not have the Enterprise edition of the IOS, will default to 5 simultaneous Telnet sessions.
If you wanted administrators to see a message when logging into the router, which command would you use?
Correct Ans:banner motd
The typical banner is a message of the day (MOTD) and is set by using the global configuration mode command banner motd.
5. What keystroke will terminate setup mode?
You can exit setup mode at any time by using the keystroke Ctrl+C.
6. You need to find the broadcast address used on a LAN on your router. What command will you type into the router from user mode to find the broadcast address?
Correct Ans:show interfaces
The command show ip protocols will actually show you the broadcast address for each interface - too bad it isn't a possible answer. Your best answer is show interfaces, which will provide the IP address and mask for each interface.
7. Which of the following commands will configure all the default VTY ports on a router?
Correct Ans:Router(config)#line vty 0 4
From global configuration mode, use the line vty 0 4 command to set all five default VTY lines.
8. Which of the following commands displays the configurable parameters and statistics of all interfaces on a router?
Correct Ans:show interfaces
With the show interfaces command, you can view the configurable parameters, get statistics for the interfaces on the router, verify if the interfaces are shut down, and see the IP address of each interface.
You type the following command into the router and receive the following output:
Router#show serial 0/0
% Invalid input detected at '^' marker.
Why was this error message displayed?
Correct Ans:Part of the command is missing.
You can view the interface statistics from user mode, but the command is show interface serial 0/0.
10. Which of the following commands sets the secret password to Cisco?
Correct Ans:enable secret Cisco
The enable secret password is case sensitive, so the second option is wrong. To set the enable secret <password>, use the enable secret <password> command from global configuration mode.
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