014.01.38.2. What are the two basic levels of configuration that NetworkManager maintains, and how does it gather information about available hardware devices?
The first level of configuration is a collection of information about available hardware devices and second is a more specific list of connections: hardware devices and additional physical and network layer configuration parameters. Information about available hardware devices is gathered from the kernel and maintains by monitoring udev over the Desktop Bus(D-Bus).
The two fundamental levels of configuration that NetworkManager maintains are a first level, which consists of information about available hardware devices, and a second level, which includes a more specific list of connections with hardware devices along with additional physical and network layer configuration parameters. Information about available hardware devices is gathered from the kernel and monitored through udev via the Desktop Bus (D-Bus).
