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

A.

Start and prepare the desktop environment for the user.

B.

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

C.

Handle the login of a user.

D.

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

E.

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

What is the purpose of a screen reader?

A.

It reads text displayed on the screen to blind or visually impaired people.

B.

It reads the parameters of the attached monitors and creates an appropriate X11 configuration.

C.

It displays lines and markers to help people use speed reading techniques.

D.

It manages and displays files that contain e-books.

How is a display manager started?

A.

It is started by a user using the command startx.

B.

It is started like any other system service by the init system.

C.

It is started by inetd when a remote hosts connects to the X11 port.

D.

It is started automatically when a X11 user logs in to the system console.

What is true about the file /etc/localtime?

A.

It is a plain text file containing a string such as Europe/Berlin.

B.

It is created and maintained by the NTP service based on the geolocation of the system's IP address.

C.

It is a symlink to /sys/device/clock/ltime and always contains the current local time.

D.

It is either a symlink to or a copy of a timezone information file such as /usr/share/zoneinfo/Europe/Berlin.

What is the purpose of the iconv command?

A.

It converts bitmap images from one format to another such as PNG to JPEG.

B.

It verifies that the root directory tree complies to all conventions from the Filesystem Hierarchy Standard (FHS).

C.

It displays additional meta information from icon files ending in .ico.

D.

It changes the mode of an inode in the ext4 file system.

E.

It converts files from one character encoding to another.

Which of the following fields are available in both the global /etc/crontab file as well as in user-specific crontab files? (Select TWO correct answers)

A.

Year

B.

Minute

C.

Username

D.

Command

Which of the following files assigns a user to its primary group?

A.

/etc/pgroup

B.

/etc/shadow

C.

/etc/group

D.

/etc/passwd

E.

/etc/gshadow

Which environment variable should be set in order to change the time zone for the commands run from within the environment variable's scope? (Specify the variable name only.)

Each entry in a crontab must end with what character?

A.

Tab

B.

Space

C.

Backslash

D.

Newline

Which of the following commands preloads and manages keys that are used for automatic authentication while logging in to other machines using SSH?

A.

sshd

B.

ssh-agent

C.

ssh-keygen

D.

ssh-add