Linux Foundation Certified System Administrator (LFCS) Practice Test

Questions # 51:

What is the name of the main configuration file for GNU GRUB? (Specify the file name only without any path.)

Options:

Questions # 52:

Which of the following commands can remove a user from a group?

Options:

grouprm

groupmod

passwd

usergroups

usermod

Questions # 53:

What is the purpose of the command mailq?

Options:

It fetches new emails from a remote server using POP3 or IMAP.

It is a multi-user mailing list manager.

It is a proprietary tool contained only in the qmail MTA.

It queries the mail queue of the local MTA.

It is a command-line based tool for reading and writing emails.

Questions # 54:

Which of the following are tasks handled by a display manager like XDM or KDM? (Choose TWO correct answers.)

Options:

Start and prepare the desktop environment for the user.

Configure additional devices like new monitors or projectors when they are attached.

Handle the login of a user.

Lock the screen when the user was inactive for a configurable amount of time.

Create an X11 configuration file for the current graphic devices and monitors.

Questions # 55:

Which of the following options for the kernel's command line changes the systemd boot target to rescue.target instead of the default target?

Options:

systemd.target=rescue.target

systemd.runlevel=rescue.target

systemd.service=rescue.target

systemd.default=rescue.target

systemd.unit=rescue.target

Questions # 56:

Which character starts a comment line in a shell script file?

Options:

;

Questions # 57:

Which command is used to add an empty group to the system? (Specify ONLY the command without any path or parameters.)

Options:

Questions # 58:

With X11 forwarding in ssh, what environment variable is automatically set in the remote host shell that is not set when X11 forwarding is not enabled? (Specify only the environment variable without any additional commands or values.)

Options:

Questions # 59:

Which command can be used to investigate the properties for a particular window in X by clicking that window? (Specify ONLY the command without any path or parameters.)

Options:

Questions # 60:

When given the following command line.

echo "foo bar" | tee bar | cat

Which of the following output is created?

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