Which of the following crontab lines sets up the execution of schdcmd every 1st and 15th of the month at 7:55 and 18:55?

Which of the following distributions can not be backed by a support contract from its vendor?

Which of the following rpm packages cannot be installed on an amd64 machine with the appropriate system?

As of Linux 2.6, what is the default sound system?

Which of the following commands disables a site or virtual host in Apache under Debian/Ubuntu?

Which of the following commands does not display active processes?

What is the command used to upgrade all installed packages on a machine running Ubuntu?

Which of the following commands will not log you out of a bash terminal?

Which of the following commands creates a new user along with its home directory and populates it with files from /etc/skel?

Which of the following switches forces rm to ask for confirmation?

Which of the following is not a Groupware solution for Linux?