When the command echo $ outputs 1, which of the following statements is true?

It is the exit value of the command executed immediately before echo.

It is the process ID of the echo command.

It is the process ID of the current shell.

It is the exit value of the command executed immediately before echo.

It is the exit value of the echo command.

What output will the command seq 10 produce?

The numbers 1 through 10 with one number per line.

A continuous stream of numbers increasing in increments of 10 until stopped.

The numbers 1 through 10 with one number per line.

The numbers 0 through 9 with one number per line.

The number 10 to standard output.

What is the difference between the commands test -e path and test -f path?

Both options check the existence of the path. The -f option also confirms that it is a regular file.

They are equivalent options with the same behaviour.

The -f option tests for a regular file. The -e option tests for an empty file.

Both options check the existence of the path. The -f option also confirms that it is a regular file.

The -f option tests for a regular file. The -e option tests for an executable file.

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

It is the process ID of the current shell.

It is the process ID of the echo command.

It is the process ID of the current shell.

It is the process ID of the last command executed.

It is the process ID of the last command which has been placed in the background.

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

SELECT order_type,COUNT(*) FROM orders GROUP BY order_type;

SELECT order_type,COUNT(*) FROM orders WHERE order_type=order_type;

SELECT order_type,COUNT(*) FROM orders GROUP BY order_type;

COUNT(SELECT order_type FROM orders);

SELECT COUNT(*) FROM orders ORDER BY order_type;

SELECT AUTO_COUNT FROM orders COUNT order_type;

What is the purpose of the file /etc/profile?

It contains environment variables that are set when a user logs in.

It contains the welcome message that is displayed after login.

It contains security profiles defining which users are allowed to log in.

It contains environment variables that are set when a user logs in.

It contains default application profiles for users that run an application for the first time.

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.)

The script file must be found in the $PATH.

The script file must have the executable permission bit set.

The script must begin with a shebang-line (#!) that points to the correct interpreter.

The user issuing the command must be in the group script.

The script file must be found in the $PATH.

The script file must have the executable permission bit set.

The script must begin with a shebang-line (#!) that points to the correct interpreter.

The file system on which the script resides must be mounted with the option scripts.

Which of the following SQL statements will select the fields name and address from the contacts table?

SELECT name, address FROM contacts;

SELECT (name, address) FROM contacts;

SELECT (name address) FROM contacts;

SELECT name, address FROM contacts;

SELECT name address FROM contacts;

What benefit does an alias in bash provide?

It allows a string to be substituted for the first word of a simple command.

It provides faster lookups for commands in the system directory.

It creates a local copy of a file from another directory.

It hides what command you are running from others.

It allows a string to be substituted for the first word of a simple command.

You are looking into a new script you received from your senior administrator. In the very first line you notice a #! followed by a file path. This indicates that:

The program at that location will be used to process the script.

The file at that location was used to make the script.

This script provides identical functionality as the file at that location.

This script will self-extract into a file at that location.

The program at that location will be used to process the script.

The X11 configuration file xorg.conf is grouped into sections. How is the content of the section SectionName associated with that section?

It is placed between a line containing Section "SectionName" and a line containing EndSection.

It is placed in curly brackets as in Section SectionName { ... }.

It is placed between a line containing Section "SectionName" and a line containing EndSection.

It is placed between the tags <Section name="SectionName"> and </Section>

It is placed after the row [SectionName].

It is placed after an initial unindented Section "SectionName" and must be indented by exactly one tab character.

What is the purpose of a screen reader?

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

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

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

It manages and displays files that contain e-books.

How is a display manager started?

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

It is started by a user using the command startx.

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

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

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

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

Start and prepare the desktop environment for the user.

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

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.

LPI 102-500 Practice Test 1 - Free Online Exam Prep & Questions

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

LPI 102-500 Practice Test 1

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