Explore topic-wise MCQs in Networking.

This section includes 28 Mcqs, each offering curated multiple-choice questions to sharpen your Networking knowledge and support exam preparation. Choose a topic below to get started.

1.

You type and get this output: 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.
2.

What layer of the OSI model would you assume the problem is in if you type and receive the following message?

A. Physical layer
B. Data Link layer
C. Network layer
D. None. It is a router problem.
Answer» B. Data Link layer
3.

What is the problem with an interface if you type and receive the following message?

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.
4.

You type the following command into the router and receive the following output: 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.
5.

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

A. f no command has been typed in 35 seconds, the console connection will be closed.
B. f no router activity has been detected in 1 hour and 35 minutes, the console will be locked out.
C. f no commands have been typed in 1 minute and 35 seconds, the console connection will be closed.
D. f 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. f 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.
6.

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. , 2 and 4
B. , 3 and 5
C. and 4 only
D. one of the above
Answer» C. and 4 only
7.

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. ou need to be in privileged mode.
B. ou cannot have a space between serial and 0/0.
C. he router does not have a serial0/0 interface.
D. art of the command is missing.
Answer» E.
8.

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. he keepalives are different times.
B. he administrator has the interface shut down.
C. he administrator is pinging from the interface.
D. o cable is attached.
Answer» C. he administrator is pinging from the interface.
9.

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 0Exec-timeout 1 44Password 7098C0BQRLogin[output cut]What cause the password to be stored like this?

A. ncrypt password
B. ervice password-encryption
C. ervice-password-encryption
D. xec-timeout 1 35
Answer» C. ervice-password-encryption
10.

What keystroke will terminate setup mode?

A. Ctrl+Z
B. Ctrl+^
C. Ctrl+C
D. Ctrl+Shift+^
Answer» D. Ctrl+Shift+^
11.

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.
12.

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
13.

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.
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
15.

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

A. 2
B. 3
C. 4
D. 5
Answer» E.
16.

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
17.

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
18.

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
19.

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.
20.

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.
Answer» C. There is no show command that starts with ru.
21.

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
22.

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.
23.

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
24.

Which of the following commands will display the current IP addressing and the layer 1 and 2 status of an interface? show version show protocols show interfaces show controllers 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
25.

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
Answer» E.
26.

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
Answer» D. show versions
27.

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.
28.

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
Answer» D. enable password Cisco