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Explore The Network, The purpose of CISCO IOS - Coggle Diagram

- - - - ◦ Use the configure terminal command to access.
        ◦ Changes made affect the operation of the device.
  - - - ◦ Line mode - to configure the console, AUX, Telnet, or SSH
        access.
  - - - ◦ Use return to user EXEC mode, use the disable command.
  - - - ◦ end - Can be used to exit out of global configuration mode regardless
        of which configuration mode you are in.
        
        ◦ ^z - Works the same as end.
  - - - ◦ Enter global config mode using the configure terminal command.
        
        ◦ Enter interface sub-config mode using the interface fa0/1
        command.
        
        ◦ Exit out of each mode using the exit command
        
        ◦ The remainder of the configuration illustrates how you can exit a sub-config mode and return to privileged EXEC mode using either the end or ^Z key combination.
- - - - ◦ description string - The command is used to add a description to an interface. The string argument is text entered by the administrator such as description Connects to the main headquarter office switch.
        
        ◦ ping ip-address - The command is ping and the user-defined argument is the
        ip-address of the destination device such as in ping 10.10.10.5
    - - IOS Context-Sensitive Help:
        
        ◦ Context-sensitive help provides a list of commands and the
        arguments associated with those commands
        
        within the context of the current mode. ◦ To access context-sensitive help, enter a question mark ?, at any prompt.
      - IOS Command Syntax Check:
        
        • The command line interpreter checks an entered command from left to right
        to determine what action is being requested.
        
        • If the interpreter understands the command, the requested action is
        executed and the CLI returns to the appropriate prompt.
        
        • If the interpreter discovers an error, the IOS generally provides feedback such as “Ambiguous command”, “Incomplete command”, or “Incorrect command”.
  - - - For example, the configure command can be shortened to conf because
        configure is the only command that begins with conf.
        
        ◦ An even shorter version of con will not work because more than one
        command begins with con.
        
        ◦ Keywords can also be shortened.
  - - - Down Arrow – Allows the user to scroll through command history.
        
        Up Arrow - Allows the user to scroll backward through commands.
        
        Tab - Completes the remainder of a partially entered command.
        
        Ctrl-A - Moves to the beginning of the line.
        
        Ctrl-E – Moves to the end of the line.
        
        Ctrl-R – Redisplays a line.
        
        1 more item...
- - - - These devices provide connectivity and work behind the scenes to ensure that data flows across the network.
      - switches and wireless access points (network access)
      - routers (internetworking)
      - firewalls (security).
  - - - Typical examples of network media include copper coaxial cable, copper twisted pair cables and optical fiber cables used in wired networks, and radio waves used in wireless data communications networks.
- - - - Reliable and secure access to networked resources
        
        Network scalability
- - - - ◦ Cisco IOS for network devices (e.g., switches, routers, wireless AP, firewall, …)
  - - - Use a mouse to make selections and run programs
        
        Enter text and text-based commands
- - - - A console uses a low speed serial connection directly from a
        computer or terminal to the console connection on the router.
        
        A dialup connection using a modem or null modem connected
        to the router AUX port.
        
        Telnet to the router.
- - - - ◦ Secure Shell (SSH)
        
        ◦ Telnet
- - - - Global Configuration mode: This mode allows users to modify the running system
        configuration.