What OS portion interacts directly with hardware
The Kernel.
What OS portion interfaces with the user and applications
The Shell.
What is the operating system on a home router usually called
Firmware.
What type of interface uses text-based commands at a prompt
A Command-Line Interface or CLI.
What interface uses graphical icons menus and windows
A Graphical User Interface or GUI.
Why is the CLI preferred for network device management
It is more reliable and feature-complete than a GUI.
What is the family of network operating systems on many Cisco devices
Cisco IOS.
Name a Cisco operating system besides IOS
IOS XE.
Name a Cisco operating system designed for large service provider networks
IOS XR.
Name a Cisco operating system used in data center switches
NX-OS.
What is an access method that uses a physical management port
Console.
What is the recommended secure method for remote CLI access
SSH.
What is an insecure method of remote CLI access
Telnet because it does not provide an encrypted connection.
What type of access uses a dedicated management channel
Out-of-band access.
What type of access requires active networking services
In-band access.
What is the advantage of out-of-band access
Device is accessible even if networking services fail.
What is required for a console connection
A terminal emulation program and a console cable.
Name a terminal emulation program for device access
PuTTY.
Besides PuTTY name another terminal emulation program
Tera Term.
Which IOS mode provides limited view-only access
User EXEC Mode.
Which IOS mode provides access to all commands including configuration
Privileged EXEC Mode.
Which mode is used to make configuration changes affecting the entire device
Global Configuration Mode.
Which subconfiguration mode is used to configure console SSH or Telnet access
Line Configuration Mode.
Which subconfiguration mode is used to configure a switch port or router interface
Interface Configuration Mode.