The network service order list is used to determine the primary network service interface if there is more than one active service. All network traffic that isn't better handled via local connection to an active network service interface is sent to the primary network service interface. So in most cases all WAN traffic, Internet traffic, and DNS resolution is sent through the primary network service interface.

The Apple print drivers are the best source for configuring OS X printers. One method is to let the software update system automatically download and install the appropriate printer drivers. Or you can manually download and install printer drivers from the Apple support website.

The master password is used to reset local account passwords.

The Activity Monitor application is used to monitor open processes and applications.