In this chapter, you learned:
The TCP/IP network model is a simplified, four-layered set of abstractions that describes how different protocols interoperate in order for computers to send traffic from one machine to another over the Internet.
IPv4 is the primary network protocol used on the Internet today. IPv6 is intended as an eventual replacement for the IPv4 network protocol. By default, Red Hat Enterprise Linux operates in dual-stack mode, using both protocols in parallel.
NetworkManager is a daemon that monitors and manages network configuration.
The nmcli command is a command-line tool for configuring network settings with NetworkManager.
The system's static host name is stored in the /etc/hostname file.
The hostnamectl command is used to modify or view the status of the system's host name and related settings.
The hostname command displays or temporarily modifies the system's host name.
Click CREATE to build all of the virtual machines needed for the classroom lab environment. This may take several minutes to complete. Once created the environment can then be stopped and restarted to pause your experience.
If you DELETE your lab, you will remove all of the virtual machines in your classroom and lose all of your progress.