NECC Mod 2 Flashcards
All end devices and network devices require an?
operating system (OS)
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.
Shell
Communicates between the hardware and software of a computer and manages how hardware resources are used to meet software requirements.
Kernel
The physical part of a computer including underlying electronics.
Hardware
Such as Windows, macOS, Linux KDE, Apple iOS, or Android allows the user to interact with the system using an environment of graphical icons, menus, and windows.
GUI
Through a GUI, a PC operating system enables a user to do the following:
Use a mouse to make selections and run programs, Enter text and text-based commands, View output on a monitor
A CLI-based network operating system (e.g., the Cisco IOS on a switch or router) enables a network technician to do the following:
Use a keyboard to run CLI-based network programs, Use a keyboard to enter text and text-based commands, View output on a monitor
Which access method would be most appropriate if you were in the equipment room with a new switch that needs to be configured?
Console
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?
Console
Which access method would be the most appropriate in-band access to the IOS over a network connection?
Telnet/SSH
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?
Aux
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 _____ mode is identified by the CLI prompt that ends with the > symbol.
User EXEC Mode
Switch>
Router>
To execute configuration commands, a network administrator must access ____________ mode. Higher configuration modes, like global configuration mode, can only be reached from privileged EXEC mode. The ___________ mode can be identified by the prompt ending with the # symbol.
Privileged EXEC Mode
Switch#
Router#
To configure the device, the user must enter global configuration mode, which is commonly called
global config mode
Switch(config)#.
Used to configure console, SSH, Telnet, or AUX access.
Line Configuration Mode
Used to configure a switch port or router network interface.
Interface Configuration Mode
IOS mode allows access to all commands and features?
Privileged EXEC Mode
Which IOS mode are you in if the Switch(config)# prompt is displayed?
Global Configuration mode
Which IOS mode are you in if the Switch> prompt is displayed?
user EXEC mode
What two commands would return you to the privileged EXEC prompt regardless of the configuration mode you are in?
CTRL + Z and End
This is a specific parameter defined in the operating system.
Keyword
This is not predefined; it is a value or variable defined by the user.
Argument
The command is ping and the user-defined argument is the ip-address of the destination device. For example, ping 10.10.10.5.
ping ip-address
he command is traceroute and the user-defined argument is the ip-address of the destination device. For example, traceroute 192.168.254.254.
traceroute ip-address
Completes a partial command name entry.
Tab
Erases the character to the left of the cursor.
Backspace
Recalls the previous command in the history buffer, beginning with the most recent command.
Up Arrowor Ctrl+P
Displays the next line.
Enter Key
Displays the next screen.
Space Bar
When in any configuration mode, ends the configuration mode and returns to privileged EXEC mode. When in setup mode, aborts back to the command prompt.
Ctrl-C
When in any configuration mode, ends the configuration mode and returns to privileged EXEC mode.
Ctrl-Z
All-purpose break sequence used to abort DNS lookups, traceroutes, pings, etc.
Ctrl-Shift-6
When the naming convention has been identified, the next step is to use the CLI to apply the names to the devices. As shown in the example, from the privileged EXEC mode, access the global configuration mode by entering the configure terminal command. Notice the change in the command prompt.
Switch# configure terminal
Switch(config)# hostname Sw-Floor-1
Sw-Floor-1(config)#
What is the command to assign the name “Sw-Floor-2” to a switch?
hostname Sw-floor-2
How is the privileged EXEC mode access secured on a switch?
enable secret class
Which command enables password authentication for user EXEC mode access on a switch?
login
Which command encrypts all plaintext passwords access on a switch?
service password-encryption
Which is the command to configure a banner to be displayed when connecting to a switch?
banner motd $ Keep out $
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.
startup-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.
running-config
