Which of the following does the command mount -a do?

An administrator has just set up the X Display Manager as the default display manager. Which of
the following files should be edited to change the default background for it?

How can an administrator update a package only if an earlier version is currently installed on the
system?

Which of the following commands will show the contents of a gzip compressed tar archive?

CORRECT TEXT

What word is missing from the following SQL statement? update tablename ____
fieldname=’value’ where id=909;

An administrator suspects that a new Ethernet card might be conflicting with another device.
Which file should the administrator check within the /proc tree to learn which IRQs are being used
by which kernel drivers? (Please enter only a single command and do not enter duplicate answers
in this field.)

Which of the following commands can be used to instruct the init process to switch runlevels?
(Select TWO).

CORRECT TEXT

What is the command to delete the default gateway from the system IP routing table? (Please
specify the complete command with arguments, please no duplicate answers in this field.)

All of the following commands will execute the bash script /usr/local/bin/runme.sh EXCEPT:

An administrator is experimenting with a binary in /tmp/foo.d that expects its configuration file at

/etc/foo.conf. The administrator does not want to save it there, but use a symbolic link to
/tmp/foo.d/foo.conf instead. Which of the following commands would accomplish this?