Explore topic-wise MCQs in Networking.

This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Networking knowledge and support exam preparation. Choose a topic below to get started.

1.

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.
Answer» C. The administrator is pinging from the interface.
Discussion
2.

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
Answer» D. NVRAM loaded mode
Discussion
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
Answer» E.
Discussion
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 serial 0
D. show serial 0 controllers
Answer» D. show serial 0 controllers
Discussion
5.

*$_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 35
Answer» C. service-password-encryption
Discussion
6.

*$_What keystroke will terminate setup mode??

A. Ctrl+Z
B. Ctrl+^
C. Ctrl+C
D. Ctrl+Shift+^
Answer» D. Ctrl+Shift+^
Discussion
7.

*/*_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.
Answer» B. Data Link layer
Discussion
8.

_ How many simultaneous Telnet sessions does a Cisco router support by default?$?

A. 2
B. 3
C. 4
D. 5
Answer» E.
Discussion
9.

_ Which command will delete the contents of NVRAM on a router?$?

A. delete NVRAM
B. delete startup-config
C. erase NVRAM
D. erase start
Answer» E.
Discussion
10.

_ 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?$?

A. If no command has been typed in 35 seconds, the console connection will be closed.
B. If no router activity has been detected in 1 hour and 35 minutes, the console will be locked out.
C. If no commands have been typed in 1 minute and 35 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 35 seconds or the connection will be closed.
Answer» D. 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.
Discussion
11.

_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
Answer» D. message motd
Discussion
12.

_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
Answer» D. show protocols
Discussion
13.

Which of the following commands will display the current IP addressing and the layer 1 and 2 status of an interface?1. show version2. show protocols3. show interfaces4. show controllers5. show ip interface$?

A. 1, 2 and 4
B. 2, 3 and 5
C. 3 and 4 only
D. None of the above
Answer» C. 3 and 4 only
Discussion
14.

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
Answer» C. Router (config-if) #line console 0
Discussion
15.

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
C. There is no show command that starts with
D. The command is being executed from the wrong router mode.
Answer» C. There is no show command that starts with
Discussion
16.

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
C. There is no show command that starts with
D. The command is being executed from the wrong router mode.
Answer» C. There is no show command that starts with
Discussion
17.

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
Answer» C. Router (config-if) #line console 0
Discussion
18.

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.
Answer» E.
Discussion