CCNA FAQ:Foundation Cisco IOS Operations
Q1. What is the effect of changing the configuration register?
Q2. Why would a Cisco administrator use boot system commands?
Q3. What are the memory components in a router and what purpose do they have in the booting process?
Q4. What cabling and terminal settings are required for out-of-band management?
Q5. What is the significance of having User EXEC mode in addition to Privileged EXEC mode?
Q6. What type of cable would you connect to manage your Cisco device from the COM port of your PC?
A. Cross-over cable
B. Straight-through cable
C. Patch cable
D. Rollover cable
Q7. Which are two methods of exiting out of Setup Mode? (Choose 2.)
C. Answer no
D. Type end
Q8. You have just been given a router that will not save its configuration. As you boot up the router, you confirm that despite saving the configurations several times, the router enters Setup Mode consistently. What might be a possible cause?
A. Flash memory is corrupt.
B. TFTP Server is down.
C. The configuration register is 0x2100.
D. The configuration register is 0x2142.
Q9. What and where are the commands that can alter the location for the bootstrap IOS process?
A. boot system command, NVRAM memory
B. boot enable command, NVRAM memory
C. boot strap command, Flash memory
D. boot system command, Flash memory
Q10. Assuming no boot commands, what is the default location of the IOS and what is the order of the two fallbacks?
A. NVRAM, TFTP then ROM
B. Flash, TFTP then ROM
C. ROM, Flash then TFTP
D. TFTP, Flash then ROM
Q11. Which of the following is considered a typical default configuration register?
Q12. Which of the following are in-band management EXEC methods? (Choose 2.)
Q13. Which of the following valid commands assign an IP address to an interface from Interface Configuration mode?
A. Router(config)#ip address 192.168.1.1 255.255.255.0
B. Router(config-if)#ip address 192.168.1.1 255.255.255.0
C. Router#ip address 192.168.1.1 255.255.255.0
D. Router>ip address 192.168.1.1 255.255.255.0
E. Router(config-line)#ip address 192.168.1.1 255.255.255.0
Q14. If your network does not have a TFTP server and your router’s configuration was erased, what will the prompt look like when you reboot?
A. rommon 1 >
C. Would you like to enter the initial configuration dialog? [yes/no] :
D. The router would not be able to boot.
Q15. Which two commands will return you to Privileged EXEC? (Choose 2.)
Q16. Which three components are located in ROM? (Choose 3.)
D. IOS file
Q1. You type show interfaces fa0/1 and get this output:
275496 packets input, 35226811 bytes, 0 no buffer
Received 69748 broadcasts (58822 multicasts)
0 runts, 0 giants, 0 throttles
111395 input errors, 511987 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 58822 multicast, 0 pause input
0 input packets with dribble condition detected
2392529 packets output, 337933522 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
What could the problem possibly be with this interface?
A. Speed mismatch on directly connected interfaces
B. Collisions causing CRC errors
C. Frames received are too large
D. Interference on the Ethernet cable
Q2. The output of the show running-config command comes from ___________.
Q3. Which two of the following commands are required when configuring SSH on your router? (Choose two.)
A. enable secret password
B. exec-timeout 0 0
C. ip domain-name name
D. username name password password
E. ip ssh version 2
Q4. Which command will show you whether a DTE or a DCE cable is plugged into serial 0/0 on your router’s WAN port?
A. sh int s0/0
B. sh int serial 0/0
C. show controllers s 0/0
D. show serial 0/0 controllers
Q5. In the work area, drag the router term to its definition on the right.
User exec mode is limited to basic monitoring commands; privileged exec mode provides access to all other router commands. Specific configuration modes include thecommands that affect a specific interface or process, while global configuration mode allows commands that affect the entire system. Setup mode is where you access the interactive configuration dialog.
Q6. Using the given output, what type of interface is f0/0?
Hardware is MV96340 Ethernet, address is 001a.2f55.c9e8 (bia 001a.2f55.c9e8)
Internet address is 192.168.1.33/27
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
A. 10 MB
B. 100 MB
C. 1000 MB
D. 1000 MB
Q7. Which of the following commands will configure all the default VTY ports on a switch?
A. Switch#line vty 0 4
B. Switch(config)#line vty 0 4
C. Switch(config-if)#line console 0
D. Switch(config)#line vty all
Q8. Which of the following commands sets the privileged mode password to Cisco and encrypts the password?
A. enable secret password Cisco
B. enable secret cisco
C. enable secret Cisco
D. enable password Cisco
Q9. If you wanted administrators to see a message when logging into the switch, which command would you use?
A. message banner motd
B. banner message motd
C. banner motd
D. message motd
Q10. Which of the following prompts indicates that the switch is currently in privileged mode?
Answer: C. The prompts offered as options indicate the following modes:
- Switch(config)# is global confiuration mode.
- Switch> is user mode.
- Switch# is privileged mode.
- Switch(config-if)# is interface confiuration mode.
Q11. What command do you type to save the configuration stored in RAM to NVRAM?
A. Switch(config)#copy current to starting
B. Switch#copy starting to running
C. Switch(config)#copy running-config startup-config
D. Switch#copy run start
Q12. You try to telnet into SF from router Corp and receive this message:
Trying SF (10.0.0.1)…Open
Password required, but none set
[Connection to SF closed by foreign host]
A. Corp(config)#line console 0
Corp (config-line)#password password
B. SF (config)#line console 0
SF(config-line)#enable secret password
C. Corp(config)#line vty 0 4
Corp (config-line)#password password
D. SF (config)#line vty 0 4
Q13. Which command will delete the contents of NVRAM on a switch?
A. delete NVRAM
B. delete startup-config
C. erase flash
D. erase startup-config
E. erase start
Q14. What is the problem with an interface if you type show interface g0/1 and receive the following message?
Gigabit 0/1 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.
Q15. Which of the following commands displays the configurable parameters and statistics of all interfaces on a switch?
A. show running-config
B. show startup-config
C. show interfaces
D. show versions
Q16. If you delete the contents of NVRAM and reboot the switch, what mode will you be in?
A. Privileged mode
B. Global mode
C. Setup mode
D. NVRAM loaded mode
Q17. You type the following command into the switch and receive the following output:
Switch#show fastethernet 0/1
% 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 fastethernet and 0/1.
C. The switch does not have a Fastethernet 0/1 interface.
D. Part of the command is missing.
Q18. You type Switch#sh r and receive a % 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 letter r.
C. There is no show command that starts with r.
D. The command is being executed from the wrong mode.
Q19. Which of the following commands will display the current IP addressing and the layer 1 and 2 status of an interface? (Choose two.)
A. show version
B. show interfaces
C. show controllers
D. show ip interface
E. show running-config
Q20. At which layer of the OSI model would you assume the problem is 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.
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