Ios And Security Device Manager(Networking ) Questions and answers for exam Preparation

Question 1. Which of the following commands sets the secret password to Cisco?

enable secret password Cisco
enable secret cisco
enable secret Cisco
enable password Cisco

Explanation:-

Answer: Option C. -> enable secret Cisco
The enable secret password is case sensitive, so the second option is wrong. To set the enable secret , use the enable secret command from global configuration mode.

Question 2. 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?

You need to be in privileged mode.
You cannot have a space between serial and 0/0.
The router does not have a serial0/0 interface.
Part of the command is missing.

Explanation:-

Answer: Option D. -> Part of the command is missing.
You can view the interface statistics from user mode, but the command is show interface serial 0/0

Question 3. What layer of the OSI model would you assume the problem is in if you type show interface serial 1 and receive the following message? "Serial1 is down, line protocol is down."

Physical layer
Data Link layer
Network layer
None. It is a router problem.

Explanation:-

Answer: Option A. -> Physical layer
If you see that a serial interface and the protocol are both down, then you have a Physical layer problem. If you see serial1 is up, line protocol is down, then you are not receiving (Data Link) keepalives from the remote end.

Question 4. Which of the following commands will display the current IP addressing and the layer 1 and 2 status of an interface?
1. show version
2. show protocols
3. show interfaces
4. show controllers
5. show ip interface

1, 2 and 4
2, 3 and 5
3 and 4 only
None of the above

Explanation:-

Answer: Option B. -> 2, 3 and 5
The commands show protocols, show interfaces, and show ip interface will show you the layer 1 and 2 status and the IP addresses of your router's interfaces.

Question 5. You type show running-config and get this output:
[output cut]
Line console 0
Exec-timeout 1 35
Password BIXPASSWD
Login
[output cut]
What do the two numbers following the exec-timeout command mean?

If no command has been typed in 35 seconds, the console connection will be closed.
If no router activity has been detected in 1 hour and 35 minutes, the console will be locked out.
If no commands have been typed in 1 minute and 35 seconds, the console connection will be closed.
If you're connected to the router by a Telnet connection, input must be detected within 1 minute and 35 seconds or the connection will be closed.

Explanation:-

Answer: Option C. -> If no commands have been typed in 1 minute and 35 seconds, the console connection will be closed.
The exec-timeout command is set in minutes and seconds.

Question 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?

show running-config
show startup-config
show interfaces
show protocols

Explanation:-

Answer: Option C. -> 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.

Question 7. What keystroke will terminate setup mode?

Ctrl+Z
Ctrl+^
Ctrl+C
Ctrl+Shift+^

Explanation:-

Answer: Option C. -> Ctrl+C
You can exit setup mode at any time by using the keystroke Ctrl+C.

Question 8. Which of the following commands displays the configurable parameters and statistics of all interfaces on a router?

show running-config
show startup-config
show interfaces
show versions

Explanation:-

Answer: Option C. -> 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.

Question 9. Which of the following commands will configure all the default VTY ports on a router?

Router#line vty 0 4
Router (config) #line vty 0 4
Router (config-if) #line console 0
Router (config) #line vty all

Explanation:-

Answer: Option B. -> Router (config) #line vty 0 4
From global configuration mode, use the line vty 0 4 command to set all five default VTY lines.

Question 10. Which command will delete the contents of NVRAM on a router?

delete NVRAM
delete startup-config
erase NVRAM
erase start

Explanation:-

Answer: Option D. -> erase start
The erase startup-config command erases the contents of NVRAM and will put you in setup mode if the router is restarted.