Question 1

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

Accepted Answer

A display manager is responsible for starting and preparing the desktop environment for the user, as well as handling the login of a user.

Question 2

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.

Accepted Answer

The iconv command is used to convert files from one character encoding to another, allowing for the transformation of text data between different encoding standards.

Question 3

Each entry in a crontab must end with what character?
A) Tab
B) Space
C) Backslash
D) Newline

Accepted Answer

Each entry in a crontab must end with a newline character to be properly recognized and executed by the cron daemon.

Question 4

Where are user specific crontabs stored?
A) In the database file /etc/crontab.db which is shared by all users.
B) As individual per-user files within /var/spool/cron.
C) As individual per-user files in /etc/cron.user.d.
D) In the .crontab file in the user's home directory.
E) In the file /var/cron/ user-crontab which is shared by all users.

Accepted Answer

User-specific crontabs are stored as individual files within the /var/spool/cron directory, with each file named after the user.

Question 5

When the command echo $$ outputs 12942, what is the meaning of 12942?
A) It is the process ID of the echo command.
B) It is the process ID of the current shell.
C) It is the process ID of the last command executed.
D) It is the process ID of the last command which has been placed in the background.

Accepted Answer

The command `echo $$` outputs the process ID of the current shell.

Question 6

Which file contains the date of the last change of a user's password?
A) /etc/gshadow
B) /etc/passwd
C) /etc/pwdlog
D) /etc/shadow
E) /var/log/shadow

Accepted Answer

The /etc/shadow file contains encrypted password information and includes fields for the date of the last password change for each user.

Question 7

Which of the following SQL queries counts the number of occurrences for each value of the field order_type in the table orders?
A) SELECT order_type,COUNT(*) FROM orders WHERE order_type=order_type;
B) SELECT order_type,COUNT(*) FROM orders GROUP BY order_type;
C) COUNT(SELECT order_type FROM orders);
D) SELECT COUNT(*) FROM orders ORDER BY order_type;
E) SELECT AUTO_COUNT FROM orders COUNT order_type;

Accepted Answer

The query in option B uses the GROUP BY clause to count the number of occurrences for each distinct value in the order_type field, which is the correct approach for this task.

Question 8

What is NOT contained in the locale setting of the operating system?
A) currency symbol
B) language
C) timezone
D) thousands separator

Accepted Answer

The answer of What is NOT contained in the locale...

Question 9

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.

Accepted Answer

A display manager is typically started by the init system as a system service during the boot process.

Question 10

Which file used by XDM specifies the default wallpaper?
A) /etc/X11/xdm/Xsetup
B) /etc/X11/xdm.conf
C) /etc/X11/xdm/Defaults
D) /etc/X11/defaults.conf

Accepted Answer

The file /etc/X11/xdm/Xsetup is used by XDM to execute commands during the setup phase of the X session, which can include setting the default wallpaper.

Question 11

How can the existing environment variable FOOBAR be suppressed for the execution of the script./myscript only?
A) unset -v FOOBAR;./myscript
B) set -a FOOBAR="";./myscript
C) env -u FOOBAR./myscript
D) env -i FOOBAR./myscript

Accepted Answer

The `env -u FOOBAR ./myscript` command temporarily removes the FOOBAR environment variable for the execution of `./myscript`.

Question 12

Which of the following words is used to restrict the records that are returned from a SELECT SQL query based on a supplied criteria for the values in the records?
A) CASE
B) FROM
C) WHERE
D) IF

Accepted Answer

The WHERE clause is used in SQL to filter records based on specified criteria, restricting the results returned by a SELECT query.

Question 13

For accessibility assistance, which of the following programs is an on-screen keyboard?
A) xkb
B) atkb
C) GOK
D) xOSK

Accepted Answer

GOK (GNOME On-screen Keyboard) is an on-screen keyboard designed to provide accessibility assistance for users who have difficulty using a physical keyboard.

Question 14

Which command can be used to delete a group from a Linux system?
A) groupdel
B) groupmod
C) groups
D) groupedit

Accepted Answer

The groupdel command is used to delete a group from a Linux system.

Question 15

Which of the following fields can be found in the /etc/group file? (Choose THREE correct choices.)
A) The list of users that belong to the group.
B) The home directory of the group.
C) The name of the group.
D) The description of the group.
E) The password of the group.

Accepted Answer

The answer of Which of the following fields can be...

Question 16

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 choices.)
A) Year
B) Minute
C) Username
D) Command

Accepted Answer

Minute and Command fields are available in both the global /etc/crontab file as well as in user-specific crontab files.

Question 17

Which character in the password field of /etc/passwd is used to indicate that the encrypted password is stored in /etc/shadow?
A) *
B) -
C) s
D) x

Accepted Answer

The answer of Which character in the password field of...

Question 18

Which of the following commands shows the current color depth of the X Server?
A) xcd
B) xcdepth
C) xwininfo
D) xcolordepth
E) cat /etc/X11

Accepted Answer

The `xwininfo` command provides detailed information about windows on an X server, including the color depth.

Question 19

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.

Accepted Answer

A screen reader is an assistive technology that reads text displayed on a computer screen aloud to help blind or visually impaired individuals access digital content.

Question 20

Which of the following commands should be added to /etc/bash_profile in order to change the language of messages for an internationalized program to Portuguese (pt)?
A) export LANGUAGE="pt"
B) export MESSAGE="pt"
C) export UI_MESSAGES="pt"
D) export LC_MESSAGES="pt"
E) export ALL_MESSAGES="pt"

Accepted Answer

The correct environment variable to set the language of messages for an internationalized program is LC_MESSAGES. Setting it to "pt" will change the language to Portuguese.

Exam 1: Linux Foundation Certified System Administrator

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

What is the purpose of the iconv command?

Each entry in a crontab must end with what character?

Where are user specific crontabs stored?

When the command echo $$ outputs 12942, what is the meaning of 12942?

Which file contains the date of the last change of a user's password?

Which of the following SQL queries counts the number of occurrences for each value of the field order_type in the table orders?

What is NOT contained in the locale setting of the operating system?

How is a display manager started?

Which file used by XDM specifies the default wallpaper?

How can the existing environment variable FOOBAR be suppressed for the execution of the script./myscript only?

Which of the following words is used to restrict the records that are returned from a SELECT SQL query based on a supplied criteria for the values in the records?

For accessibility assistance, which of the following programs is an on-screen keyboard?

Which command can be used to delete a group from a Linux system?

Which of the following fields can be found in the /etc/group file? (Choose THREE correct choices.)

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 choices.)

Which character in the password field of /etc/passwd is used to indicate that the encrypted password is stored in /etc/shadow?

Which of the following commands shows the current color depth of the X Server?

What is the purpose of a screen reader?

Which of the following commands should be added to /etc/bash_profile in order to change the language of messages for an internationalized program to Portuguese (pt) ?