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What output will the following command sequence produce?
echo ‘1 2 3 4 5 6’ | while read a b c; do echo result: $c $b $a; done
A. result: 3 4 5 6 2 1
B. result: 1 2 3 4 5 6
C. result: 6 5 4
D. result: 6 5 4 3 2 1
E. result: 3 2 1

Correct Answer: A QUESTION 2
When the command echo $ outputs 1, which of the following statements is true?
A. It is the process ID of the echo command.
B. It is the process ID of the current shell.
C. It is the exit value of the command executed immediately before echo.
D. It is the exit value of the echo command.

Correct Answer: C QUESTION 3
Which command makes the shell variable named VARIABLE visible to subshells?
A. export $VARIABLE
B. export VARIABLE

Correct Answer: B QUESTION 4
What output will the command seq 10 produce?
A. A continuous stream of numbers increasing in increments of 10 until stopped.
B. The numbers 1 through 10 with one number per line.
C. The numbers 0 through 9 with one number per line.
D. The number 10 to standard output.

Correct Answer: B QUESTION 5
After issuing:
function myfunction { echo $1 $2 ; }
in Bash, which output does:
myfunction A B C

A. A B
B. A B C
C. A C
D. B C
E. C B A

Correct Answer: A
Which of the following commands puts the output of the command date into the shell variable mydate?
A. mydate=”$(date)”
B. mydate=”exec date”
C. mydate=”$((date))”
D. mydate=”date”
E. mydate=”${date}”

Correct Answer: A
Which of the following files, when existing, affect the behavior of the Bash shell? (Choose TWO correct answers.)
A. ~/.bashconf
B. ~/.bashrc
C. ~/.bashdefaults
D. ~/.bash_etc
E. ~/.bash_profile

Correct Answer: BE
What is the difference between the commands test -e path and test -f path?
A. They are equivalent options with the same behaviour.
B. The -f option tests for a regular file. The -e option tests for an empty file.
C. Both options check the existence of the path. The -f option also confirms that it is a regular file.
D. The -f option tests for a regular file. The -e option tests for an executable file.

Correct Answer: C
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
Correct Answer: C
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.

Correct Answer: B
What output will the following command produce?
seq 1 5 20
A. 1 6 1 1 1 6
B. 1 5 10 15
C. 1 2 3 4
D. 2 3 4 5
E. 5 10 15 20

Correct Answer: A
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?
Correct Answer: C
Which of the following commands lists all defined variables and functions within Bash?
A. env
B. set
C. env -a
D. echo $ENV

Correct Answer: B
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;

Correct Answer: B
What is the purpose of the file /etc/profile?
A. It contains the welcome message that is displayed after login.
B. It contains security profiles defining which users are allowed to log in.
C. It contains environment variables that are set when a user logs in.
D. It contains default application profiles for users that run an application for the first time.

Correct Answer: C
Which of the following are requirements in order to run a shell script like a regular command from anywhere in the filesystem? (Choose THREE correct answers.)
A. The user issuing the command must be in the group script.
B. The script file must be found in the $PATH.
C. The script file must have the executable permission bit set.
D. The script must begin with a shebang-line (#!) that points to the correct interpreter.
E. The file system on which the script resides must be mounted with the option scripts.

Correct Answer: BCD
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

Correct Answer: A
The X11 configuration file xorg.conf is grouped into sections. How is the content of the section SectionName associated with that section?
A. It is placed in curly brackets as in Section SectionName { … }.
B. It is placed between a line containing Section “SectionName” and a line containing EndSection.
C. It is placed between the tags <Section name=”SectionName”> and </Section>
D. It is placed after the row [SectionName].
E. It is placed after an initial unindented Section “SectionName” and must be indented by exactly one tab character.
Correct Answer: B
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.

Correct Answer: A
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.

Correct Answer: B

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