The exam focuses on the command line tools. Reviewing the web configuration is important to get an understanding of CUPS but is not on the exam. If you don’t have a printer to practice with, you can create a fake printer with a command like lpadmin –p FakePrinter –E –v /dev/null –m raw, or select the Virtual PDF printer option when creating a new printer. The command creates a printer called FakePrinter where all output is discarded; the second option generates PDFs of the output for you.
CUPS provides an interface compatible with the legacy lp printing system. It is used to print from the command line and to view print queues. As some applications still print through the legacy printing system, this interface is important. ...