Cisco Ios 1 - Chapter 4

Front 1

You type show running-config and get this output:
[output cut]
Line console 0
Exec-timeout 1 44
Password 7098C0BQR
Login
[output cut]
What do the two numbers following the exec-timeout command mean?
A. If no command has been typed in 44 seconds, the console connection will be closed.
B. If no router activity has been detected in 1 hour and 44 minutes, the console will be locked out.
C. If no commands have been typed in 1 minute and 44 seconds, the console connection will
be closed.
D. If you’re connected to the router by a Telnet connection, input must be detected within 1
minute and 44 seconds or the connection will be closed.

Back 1

C. The exec-timeout command is set in minutes and seconds.

Front 2

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?
A. show running-config
B. show startup-config
C. show interfaces
D. show protocols

Back 2

C. 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. You can then determine the mask from
the vast subnetting knowledge you gained in Chapter 3.

Front 3

You want to totally reinitialize the router and replace the current running-config with the current
startup-config. What command will you use?
A. replace run start
B. copy run start
C. copy start run
D. reload

Back 3

D. You may have picked option C, which isn’t a bad answer. Remember, though, it doesn’t replace
the configuration, it appends it. To completely replace the running-config with the startup-config,
you must reload the router.

Front 4

Which command will show you whether a DTE or a DCE cable is plugged into serial 0?
A. sh int s0
B. sh int serial 0
C. show controllers s 0
D. show serial 0 controllers

Back 4

C. 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.

Front 5

What keystroke will terminate setup mode?
A. Ctrl+Z
B. Ctrl+^
C. Ctrl+C
D. Ctrl+Shift+^

Back 5

C. You can exit setup mode at any time by using the keystroke Ctrl+C.

Front 6

You set the console password, but when you display the configuration, the password doesn’t
show up; it looks like this:
[output cut]
Line console 0
Exec-timeout 1 44
Password 7098C0BQR
Login
[output cut]
What cause the password to be stored like this?
A. encrypt password
B. service password-encryption
C. service-password-encryption
D. exec-timeout 1 44

Back 6

B. The command service password-encryption, from global configuration mode, will
encrypt the passwords

Front 7

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

Back 7

B. From global configuration mode, use the line vty 0 4 command to set all five default
VTY lines.

Front 8

Which of the following commands sets the secret password to Cisco?
A. enable secret password Cisco
B. enable secret cisco
C. enable secret Cisco
D. enable password Cisco

Back 8

C. 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.

Front 9

If you wanted administrators to see a message when logging into the router, which command
would you use?
A. message banner motd
B. banner message motd
C. banner motd
D. message motd

Back 9

C. The typical banner is a message of the day (MOTD) and is set by using the global configuration
mode command banner motd.

Front 10

How many simultaneous Telnet sessions does a Cisco router support by default?
A. 1
B. 2
C. 3
D. 4
E. 5
F. 6

Back 10

E. Cisco routers, if they do not have the Enterprise edition of the IOS, will default to five simultaneous
Telnet sessions.

Front 11

What command do you type to save the configuration stored in RAM to NVRAM?
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 startup

Back 11

D. 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 (copy run start for short).

Front 12

You try to telnet into SFRouter from router Corp and receive this message:
Corp#telnet SFRouter
Trying SFRouter (10.0.0.1)…Open
Password required, but none set
[Connection to SFRouter closed by foreign host]
Corp#
Which of the following sequences will address this problem correctly?
A. Corp(config)#line console 0
B. SFRemote(config)#line console 0
C. Corp(config)#line vty 0 4
D. SFRemote(config)#line vty 0 4

Back 12

D. To allow a VTY (Telnet) session into your router, you must set the VTY password. Option
C is wrong because it is setting the password on the wrong router. Notice that the answers have
you set the login command before you set the password. Remember, Cisco may have you set
the password before the login command.

Front 13

Which command will delete the contents of NVRAM on a router?
A. delete NVRAM
B. delete startup-config
C. erase NVRAM
D. erase start

Back 13

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

Front 14

What is the problem with an interface if you type show interface serial 0 and receive the
following message?
Serial0 is administratively down, line protocol is down
A. The keepalives are different times.
B. The administrator has the interface shut down.
C. The administrator is pinging from the interface.
D. No cable is attached

Back 14

B. If an interface is shut down, the show interface command will show the interface as
administratively shut down. (It is possible that no cable is attached, but you can’t tell that from
this message.)

Front 15

Which of the following commands displays the configurable parameters and statistics of all
interfaces on a router?
A. show running-config
B. show startup-config
C. show interfaces
D. show versions

Back 15

C. 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.

Front 16

If you delete the contents of NVRAM and reboot the router, what mode will you be in?
A. Privileged mode
B. Global mode
C. Setup mode
D. NVRAM loaded mode

Back 16

C. 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.

Front 17

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

Back 17

D. You can view the interface statistics from user mode, but the command is show interface
serial 0/0.

Front 18

You type Router#sh ru and receive an % ambiguous command error. Why did you receive
this message?
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.

Back 18

B. The % ambiguous command error means that there is more then one possible command that
starts with ru. Use a question mark to find the correct command.

Front 19

Which of the following commands will display the current IP addressing and the layer 1 and
2 status of an interface? (Choose three.)
A. show version
B. show protocols
C. show interfaces
D. show controllers
E. show ip interface
F. show running-config

Back 19

B, C, E. 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.

Front 20

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
A. Physical layer
B. Data Link layer
C. Network layer
D. None; it is a router problem.

Back 20

A. 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.

Front 21

What command is used to set a serial interface to provide clocking to another router at 64Kb?

Back 21

clock rate 64000

Front 22

If you telnet into a router and get the response connection refused, password not
set, what would you do on the destination router to stop receiving this message and not
be prompted for a password?

Back 22

config t, line vty 0 4, no login

Front 23

If you type show inter e0 and notice the port is administratively down, what would
you do?

Back 23

config t, int e0, no shut

Front 24

If you wanted to delete the configuration stored in NVRAM, what would you type?

Back 24

erase startup-config

Front 25

If you wanted to set a user-mode password for the console port, what would you type?

Back 25

config t, line console 0, login, password todd

Front 26

If you wanted to set the enable secret password to cisco, what would you type?

Back 26

config t, enable secret cisco

Front 27

If you wanted to see if a serial interface needed to provide clocking, what command would you use?

Back 27

show controllers int

Front 28

What command would you use to see the terminal history size?

Back 28

show terminal

Front 29

You want to reinitialize the router and totally replace the running-config with the current
startup-config. What command will you use?

Back 29

Router#reload

Front 30

How would you set the name of a router to Chicago?

Back 30

config t, hostname Chicago

Front 31

What happens (and the sequence in which it happens) when you power on a router.

Back 31

When you first bring up a Cisco router, it will run a power-on self-test (POST), and if that passes,
it will look for and load the Cisco IOS from flash memory, if a file is present. The IOS then proceeds
to load and looks for a valid configuration in NVRAM called the startup-config. If no file is present
in NVRAM, the router will go into setup mode.

Front 32

difference between the enable password and enable secret password.

Back 32

Both
of these passwords are used to gain access into privileged mode. However, the enable secret
password is newer and is always encrypted by default. Also, if you set the enable password and
then set the enable secret, only the enable secret will be used.

Front 33

Remember how to set the enable secret on a router.

Back 33

To set the enable secret, you use the
command enable secret. Do not use enable secret password password or you will set
your password to password password. Here is an example:
enable
config t
enable secret todd

Front 34

Remember how to set the console password on a router.

Back 34

To set the console password, use
the following sequence:
enable
config t

line console 0
login
password todd

Front 35

Remember how to set the Telnet password on a router.

Back 35

To set the Telnet password, the
sequence is as follows:
enable
config t
line vty 0 4
password todd
login