Module 1: Cisco Device Management

Question 1

What are the 5 steps when loading an IOS image?

Answer 1

1. The device performs a POST (Power on Self Test).
2. The boot strap program is loaded and executed.
3. The bootstrap program loads an IOS image.
4. The IOS loads a config file from NVRAM, places is it in DRAM.
5. The device is placed in user EXEC mode.

Question 2

What happens if no config file is present?

Answer 2

If no config file is present. The device starts in the System configuration Dialog (Sys Config),.

Question 3

IOS images can be stored where?

Answer 3

1. Locally in flash memory.

2. On a network server via (TFTP).

Question 4

If flash memory is empty or corrupted what error message will you see?

Answer 4

boot: cannot open “flash:”

Question 5

If a valid IOS image cant be found. How will it attempt to load an image?

Answer 5

TFTP server.

Question 6

If it cannot locate a TFTP server, what will the device enter?

Answer 6

It will enter into ROM or ROMmon mode.

Question 7

How do you know you are in rommon mode?

Answer 7

You see the prompt rommon>

Question 8

To load a boot image while in rommon> mode. What should be issued to accomplish this?

Answer 8

confreg 0X2101

Question 9

What should you enter after the confeg 0X2101 command.

Answer 9

reset

Question 10

What happens after the “reset” command is issued?

Answer 10

The “reset” command forces the router to boot the boot image.

Question 11

After a new IOS image is downloaded. What config register setting allows it to boot the new IOS image?

Answer 11

0X2102

Question 12

What command is used to change the IOS load location.

Answer 12

boot system

Question 13

What command would you use to load from flash?

Answer 13

boot system flash [filename]

Question 14

What command would you load from TFTP?

Answer 14

boot system tftp filename [ip-address]

Question 15

What command would you use to load from ROM?

Answer 15

boot system rom

Question 16

What happens when the boot system flash [filename] is executed?

Answer 16

Configures the device to load the designated IOS image from flash memory.

Question 17

What happens when if you do not specify a “filename”?

Answer 17

The first bootable IOS image is loaded.

Question 18

What happens when you issue multiple boot system commands?

Answer 18

The router will attempt to load the IOS in the order you issued the commands.

Question 19

Where are config files stored?

Answer 19

NVRAM.

Question 20

If no file is present in NVRAM. What happens to the device?

Answer 20

The device will start the system configuration dialog or setup mode.

Question 21

What does the “setup” command allow you to configure.

Hint there are at least 5

Answer 21

1. Host name.
2. the enable password command.
   3 the enable secret password command.
3. the virtual terminal password (vty).
4. Interface IP addressing.

Question 22

What two “show” commands can you issue to a device to verify that enough flash memory space is available?

Answer 22

1. show version.

2. show flash.

Question 23

You’ve downloaded a new IOS image to a TFTP server. What command copies it to flash memory.

Answer 23

copy tftp flash.

Question 24

What 3 things will you be prompted for after you have executed the “copy tftp flash” command?

Answer 24

1. The IP address of the TFTP server.
2. The filename of the IOS image you want to copy.
3. The filename that you WANT to use for the IOS image.

Question 25

What device are you going to be asked on when executing copy tftp flash?

Answer 25

The device being upgraded.

Question 26

After the information is provded for "copy tftp flash" What will you be asked to confimr?>

Answer 26

if you would like to erase the flash memory. | Erase flash: before copying? [confirm]

Question 27

After the data has been transfered to flash. What command can you run to verify the configuration register?

Answer 27

show version to make sure the config register is set to 0X2102.

Question 28

What command can you use to view the contents of flash memory?

Answer 28

dir flash:

Question 29

if the first file listed under dir flash: Is not the new IOS image. What do you need to do?

Answer 29

1. no boot system | 2. boot system [filename] where [filename] is the image you want loaded.

Question 30

The boot system command ensures what?

Answer 30

Ensures that the device finds the correct IOS image upon reload.

Question 31

What show command can you run to ensure the correct version of IOS is running?

Answer 31

show version

Question 32

What are two common problems that occur in upgrading an IOS image?

Answer 32

1. Lack of flash memory | 2. No connectivity to tftp server.

Question 33

What does the error listed indicate: %Error copying tftp:// 10.10.10.10/newimage.bin (Not enough space on device)?

Answer 33

copy tftp flash was unable to copy because there was not enough space in flash.

Question 34

What does the error listed indicate: %Error copying tftp:// 10.10.10.10/newimage.bin (Timed Out)?

Answer 34

copy tftp flash command was unable to connect to the TFTP server at 10.10.10.10 to retirve the filename newimage.bin

Question 35

What command can you use to confirm connectivity to the tftp server?

Answer 35

ping

Question 36

Configuration register can determine what three things in a router?

Answer 36

1. How a router boots. 2. The spped of the console. 3. What options are enabled while booting.

Question 37

What show command can you run to view the current register setting?

Answer 37

show version

Question 38

What command can you issue to to change the configuration register setting?

Answer 38

config-register

Question 39

Changing the configuration register does what?

Answer 39

The configuration register can be changed to modify how a Cisco device boots.

Question 40

What show command can you use to view the current configuration register setting?

Answer 40

show version

Question 41

What command should you use to change the configuration register setting?

Answer 41

config-register 0X(value in hexadecimal)

Question 42

What is the default configuration setting on boot?

Answer 42

0X2102

Question 43

If a valid image isn't found what does the router boot to?

Answer 43

ROM

Question 44

What are the 5 most common configuration register values?

Answer 44

1. 0X2101 2. 0X2120 3. 0X2122 4. 0X2142 5. 0X3122

Question 45

What configures the device to boot to the bootstrap setting, run daignostics and uses the the baud speed of 9600?

Answer 45

0X2101

Question 46

What configuration setting configures the device to boot to rommon> prompt?

Answer 46

0X2120

Question 47

What two ways can you load an IOS image while in 0X2120?

Answer 47

1. Load a boot image. | 2. Once a boot image is loaded you can use tftp to download an IOS image.

Question 48

What configuration register setting configures the device to boot to an IOS image stored in flash?

Answer 48

0X2122

Question 49

What configuration register setting will have the router disregard the the contents of NVRAM?

Answer 49

0X2142

Question 50

0X2142 disregards the contents of NVRAM. What can be set up?

Answer 50

Config files will be ignored and you can create an initial configuration for the router.

Question 51

What configuration setting configures the device to boot to an IOS image, if a valid image exists?

Answer 51

0X3122

Question 52

Where does the config-regsiter command NOT work?

Answer 52

In ROMmon mode.

Question 53

Whats the first step in recovering a password?

Answer 53

Use the show version to make sure you change the configuration setting back to what is listed.

Question 54

After you power cycle the device what key do you press to enter ROMmon mode?

Answer 54

The break key within one minute.

Question 55

While in ROMmon mode what is the command issued to boot to flash memory?

Answer 55

confreg 0x2142 (config-register [value] does not work in ROMmon mode).

Question 56

While in ROMmon mode what command reboots the router?

Answer 56

reset

Question 57

0X2142 disregards what on boot up?

Answer 57

0x2142 configuration register disregards the contents of NVRAM.

Question 58

From global config mode, what command should you run to get the router to run from NVRAM?

Answer 58

config-register 0x2102

Question 59

After the device has been changed to boot from NVRAM. What command needs to be ran to ensure the changes are saved to NVRAM?

Answer 59

copy running-config startup-config from privileged exec mode.

Question 60

What two show commands can you run to see what licenses are on a device?

Answer 60

1. show version | 2. show license

Question 61

How do you activate a temporary license for features?

Answer 61

license boot module command.

Question 62

What will you receive when you purchase new features?

Answer 62

Product Activation Key (PAK).

Question 63

Once you have received your (PAK) what are the three ways to activate the features?

Answer 63

1. CLM (Cisco License Manager). 2. CLI - license install (command) 3. Simple Network Managment Protocol (SNMP).

Question 64

What command would you run to save activated and purchased licenses?

Answer 64

license save

Question 65

What commadn do you run to remove a license?

Answer 65

license clear

Question 66

What are the steps to reactive a permanent license if the license clear commands has been issued?

Answer 66

Use the license install command along with a copy of the license previously made using the license save command.

Question 67

What licenses can't be removed using the license clear command?

Answer 67

Temporary and built in licenses.

Question 68

The SNMP agent uses what to determine what devices are active?

Answer 68

CISCO-LICENSE-MGMT-MIB

Question 69

SNMP uses what to collect data and stats about a device?

Answer 69

User Datagram Protocol.

Question 70

UDP uses what ports?

Answer 70

UDP uses port 161 and 162.

Question 71

How man version of SNMP are there?

Answer 71

3 version. SNMPv1, SNMPv2 and SNMPv3.

Question 72

What versions sends text in clear text?

Answer 72

SNMPv1 and SNMPv2.

Question 73

What version uses encryption?

Answer 73

SNMPv3.