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- Alright, time for the sample exam.

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So how does this work?

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Well, I'm going to present
the questions overview.

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You are going to try to finish
all of these questions in,

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let's say, an hour and a half.

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Take your time, because
time is not an issue yet.

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It's all about the experience.

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So, I'm going to read
the questions for you.

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And what I would advise,
is after I read a question,

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click pause, work on it,
move on to the next question.

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So work your way through the exam,

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and do it as if it were a real exam.

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And once you're done, you can look

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at the solutions in all
of the following videos.

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So here we go.

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So, the first question is
about working with files.

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Use the appropriate
command to locate all files

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on your system with a size
bigger than a hundred megabytes,

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and write the result of that command

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to the file slash TMP slash bigfiles.

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Next, create a hard link in
the user root home directory

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with the name bigfiles that links

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to the file created in the previous step.

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Second assignment, it's
about users and permissions.

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Set defaults for all new users such

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that passwords have a
maximum validity of 90 days.

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And when creating new
users, copy an empty file

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with the name data to
their home directory.

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Next assignment is about
managing users and permissions.

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Create users Anna and Anouk,

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and set their secondary
group membership to profs.

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Create users, Linda and Lisa

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and set their secondary
group membership to students.

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Create a directory, data profs, as well

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as data students, and ensure that members

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of the group students have full access to

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data students and profs has
full access to data profs.

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Also ensure that new files

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in these directories are
automatically group owned

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by the group owners of the directories.

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Users should only be allowed
to delete their own files

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in these directories,

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but Anna should be able
to delete all files.

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Next assignment is about storage.

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Add a secondary disk to server one and

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on this disc create an
LVM logical volume group

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with the name VG exam and
a size of two gigabytes.

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The volume group should
use two physical volumes

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that are created as partitions

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on the secondary disk that you have added.

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In the VG exam volume group,

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create a logical volume
with the name LV exam.

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Format it with the EXT4 file system,

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and mount it persistently on slash exam.

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Last, copy all files with the
size greater than one megabyte

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from the slash ETC
directory to the new volume,

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which is mounted on the
directory slash exam.

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Next assignment is about scheduling tasks.

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Schedule a task that writes
a text "good morning"

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to the default system logging
system every day at 5:00 AM.

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And ensure this tasks runs as user Bob.

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Create this user if that is necessary.

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Then, you are going to protect some files.

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So create the file TMP protected
file containing the text,

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"I am protected", and ensure
that this file can be added to,

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but not removed, and current
contents cannot be changed.

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Then, you are going to
run some containers.

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Start a container that is
based on the docker dot IO

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library NGINX latest image,

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and ensure it meets the
following requirements:

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The container is started by the root user.

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The container main
application can be reached

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on localhost port 8080.

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An environment variable is
set as type equals web server.

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The container is started
as a background process.

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And within the container, a
directory data is presented.

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And all files written to that directory

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are mapped to slash route slash data.

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Now, you are going to
manage some services.

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Create a SystemD unit that runs
the sleep infinity command.

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The unit should be enabled

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in multi-user target and run
with an adjusted priority

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giving it a lower priority than
any other running processes.

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Then, we are going to do
some command line usage.

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Create a file that contains
a list of all files

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on your system that have the
set user ID permission set.

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Call this file slash route slash SUID

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dash files dash base, dot TXT.

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Add the file TMP runme,
and ensure it has the SUID,

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as well as the execute permissions.

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Run the appropriate
command to create a file

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that contains a list of all files

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on your system that have
the SUID permission set.

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Call it slash route slash SUID files,

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dash, DDMMYYYY, dot TXT.

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Where this last part
is, is automatically set

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to the date on which this command is run.

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Next, generate a list of
differences between the two files,

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and write the differences
found to TMP SUID differences,

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followed by the date extension.

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And then generate a scheduled job

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that will automatically
do this once a day.

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Alright, next assignment is
about storage management.

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Add a new disk to your system
with the size of 10 gigabytes.

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And on this disk create a
GPT partition with the size

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of two gigabytes, and mount it by UUID on

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the directory slash files.

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Ensure that this mount is
happening automatically,

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but only through a SystemD mount unit.

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And a mount should not
be included in ETC FSTAB.

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Next, you are going to work on swap.

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Create a swap file with
the name slash swapfile,

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and ensure it is activated
automatically when booting.

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Configure the appropriate
SYSCTL parameter to

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set the system preference
for swapping out data

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on memory shortage to the value 70.

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Then, you are going to set the hostname.

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Set the host name of your computer

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to examhost dot example dot local.

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And ensure that this host name resolves

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to your computer's primary IP address.

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Now, you are going to write a script.

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So, the script should prompt
the user to enter a color,

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and the name of the color
should be stored in a variable.

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The script should loop in, in such a way,

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that every 10 seconds
it'll prompt the message,

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"the color is...", whatever on screen.

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And ensure that the actual
color name is printed.

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Start this script in a way
that it takes a lower priority

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than other processes
running on your computer.

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Then, let's do some
SystemD Journal management.

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Configure the SystemD Journal

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in such a way that it
is stored persistently.

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And finally, set up your
system such that direct login

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by the user root is only allowed on TTY3.

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And ensure that this
requires your your root user

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to be able to log in with a password.

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Good luck with all of it.