CCNA I Mod 2
The device prompt for this mode ends with the ">" symbol & Only some aspects of the router configuration can be viewed
Which two statements are true regarding the user EXEC mode?
privileged EXEC
Which type of access is secured on a Cisco router or switch with the enable secret command?
to copy an existing configuration into RAM
Why would a technician enter the command copy startup-config running-config?
user EXEC mode
A router with a valid operating system contains a configuration file stored in NVRAM. The configuration file has an enable secret password but no console password. When the router boots up, which mode will display?
Nothing must be done. Changes to the configuration on an IOS device take effect as soon as the command is typed correctly and the Enter key has been pressed.
An administrator has just changed the IP address of an interface on an IOS device. What else must be done in order to apply those changes to the device?
Kernel
Communicates between the hardware and software of a computer and manages how hardware resources are used to meet software requirements
four decimal numbers between 0 and 255 separated by periods IPv4 addresses are written as four groups of decimal numbers separated by periods. For example: 192.168.1.1.
How is an IPv4 address represented?
enable secret class Securing access to the EXEC mode on a Cisco switch is accomplished with the enable secret command followed by the password. In this example the command is Switch(config)# enable secret class.
How is the privileged EXEC mode access secured on a switch?
Shell
The user interface that allows users to request specific tasks from the computer. These requests can be made either through the CLI or GUI interfaces.
Enable & Disable
These two commands will get you into and out of privileged EXEC mode, respectively.
Configure Terminal
This command will get you into global configuration mode. to exit this mode, you'll need to type either exit or Ctrl+Z
Keyword
This is a specific parameter defined in the operating system (in the figure, ip protocols).
Argument
This is not predefined; it is a value or variable defined by the user (in the figure, 192.168.10.5).
Hardware
The physical part of a computer including underlying electronics
running-config
This is stored in Random Access Memory (RAM). It reflects the current configuration. Modifying a running configuration affects the operation of a Cisco device immediately. RAM is volatile memory. It loses all of its content when the device is powered off or restarted.
startup-config
This is the saved configuration file that is stored in NVRAM. It contains all the commands that will be used by the device upon startup or reboot. Flash does not lose its contents when the device is powered off.
User EXEC Mode
This mode has limited capabilities but is useful for basic operations. It allows only a limited number of basic monitoring commands but does not allow the execution of any commands that might change the configuration of the device. The user EXEC mode is identified by the CLI prompt that ends with the > symbol.
Privileged EXEC Mode
To execute configuration commands, a network administrator must access privileged EXEC mode. Higher configuration modes, like global configuration mode, can only be reached from privileged EXEC mode. The privileged EXEC mode can be identified by the prompt ending with the # symbol.
10.1.0.0
To what subnet does the IP address 10.1.100.50 belong if a subnet mask of 255.255.0.0 is used?
dotted-decimal format IPv4 addresses are written in dotted-decimal format. For example: 192.168.1.1.
What is the structure of an IPv4 address called?
interface VLAN 1
Use this command to enter the VLAN 1 interface subconfiguration mode.
line VTY 0 15
Use this command to enter the VTY (Virtual Terminal Line) for line 0-15
line console 0
Use this command to enter the line subconfiguration mode.
The help command ('?')
Use this command to find out which commands are available in each command mode, which commands start with a particular letter or group of letters, and Which arguments and keywords are available to particular commands.
hostname Sw-Floor-2 The global configuration command to set the host name on a Cisco device is hostname. So, in this example the full command is Switch(config)# hostname Sw-Floor-2.
What is the command to assign the name "Sw-Floor-2" to a switch?
VLAN1
What is the default SVI on a Cisco switch?
It interfaces between the users and the kernel
What is the function of the shell in an OS?
Switch Virtual Interface (SVI) Switch virtual interfaces (SVIs) are virtual and have no physical port. Layer 2 switches use SVIs for remote management.
What type of interface has no physical port associated with it?
the hostname should be fewer than 64 characters in length the hostname should contain no spaces the hostname should begin with a letter
When a hostname is configured through the Cisco CLI, which three naming conventions are part of the guidelines?
Privileged EXEC mode (or enable mode) The privileged EXEC mode allows access to all commands. Higher level commands like global configuration mode and subconfiguration modes can only be reached from the privileged EXEC mode.
Which IOS mode allows access to all commands and features?
Global Configuration Mode Global configuration mode is identified by the (config)# prompt.
Which IOS mode are you in if the Switch(config)# prompt is displayed?
User EXEC mode (or view-only mode) The > prompt after the device name identifies user EXEC mode.
Which IOS mode are you in if the Switch> prompt is displayed?
Console Port Because a new switch would not have any initial configurations, it could only be configured through the console port.
Which access method would be most appropriate if you were in the equipment room with a new switch that needs to be configured?
Console Port Connecting a computer to a Cisco device through the console port requires a special console cable.
Which access method would be most appropriate if your manager gave you a special cable and told you to use it to configure the switch?
Aux The AUX port on a Cisco device provided out-of-band connections over a telephone line.
Which access method would be the most appropriate if you call your manager to tell him you cannot access your router in another city over the internet and he provides you with the information to access the router through a telephone connection?
Telnet/SSH Both Telnet and SSH are in-band access methods that require an active network connection to the device.
Which access method would be the most appropriate in-band access to the IOS over a network connection?
login User EXEC mode access through the console port is enabled with the login command entered in line mode. For example: Switch(config-line)# login.
Which command enables password authentication for user EXEC mode access on a switch?
service password-encryption The service password-encryption command entered in global configuration mode will encrypt all plaintext passwords.
Which command encrypts all plaintext passwords access on a switch?
automatic assignment of an IP address to each host
Which functionality is provided by DHCP?
banner motd $Keep Out$ The command to set a banner stating "Keep out" that will be displayed when connection to a Cisco switch is Switch(config)# banner motd $ Keep out $
Which is the command to configure a banner to be displayed when connecting to a switch?
NVRAM
Which memory location on a Cisco router or switch stores the startup configuration file?
RAM
Which memory location on a Cisco router or switch will lose all content when the device is restarted?
It affects the operation o the device immediately when modified
Which statement is true about the running configuration file in a Cisco IOS device?
end & 'Ctrl + Z' To return from any prompt, all the way down to privileged EXEC mode, type the end command or by pressing the CTRL+Z keys simultaneously on the keyboard.
Which two commands would return you to the privileged EXEC prompt regardless of the configuration mode you are in? (Choose two.)
displaying a list of all available commands within the current mode determining which option, keyword, or arguments is available for the entered command
Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI?
