LPIC-1 Administrative Tasks Practice Test 4 — 15 Questions

Question 1

Refer to the exhibit. What can be concluded about the cron daemon based on this systemctl output?

Accepted Answer

It is running and will start automatically at system boot.. The systemctl output shows 'Loaded: loaded' and 'Active: active (running)' for the cron daemon, which indicates it is currently running. Additionally, the 'enabled' status in the 'Loaded' line means the service is configured to start automatically at system boot. Therefore, option D is correct.

Answer

It is stopped.

Answer

It is enabled but not currently running.

Answer

It has failed recently.

Question 2

Refer to the exhibit. This line is from /etc/passwd. What does the third field (1001) represent?

Accepted Answer

User ID (UID). In the /etc/passwd file, the third field is the User ID (UID), a numeric identifier assigned to each user. UID 0 is reserved for root, and values below 1000 are typically system accounts, while 1001 is a regular user UID. This field is used by the kernel to track user ownership of processes and files.

Answer

Home directory UID

Answer

Group ID (GID)

Answer

Login shell number

Question 3

A system administrator needs to schedule a recurring maintenance task that runs every Monday at 3 AM. Which crontab entry is correct?

Accepted Answer

0 3 * * 1 /script.sh. Option D is correct because the crontab syntax is minute, hour, day of month, month, day of week. Setting minute=0, hour=3, day of week=1 runs the script at 3:00 AM every Monday (day 1 represents Monday in cron).

Answer

3 0 * * 1 /script.sh

Answer

0 3 * * 0 /script.sh

Answer

0 3 * * 7 /script.sh

Question 4

Which command adds a new group named 'developers' to the system?

Accepted Answer

groupadd developers. The correct command to add a new group on a Linux system is `groupadd developers`. This command creates a new group entry in the system's group database (typically /etc/group). The `groupadd` utility is the standard tool for this task in Linux, and it is part of the shadow-utils package.

Answer

addgroup developers

Answer

newgroup developers

Answer

groupadd -r developers

Question 5

A user reports that a file cannot be saved due to 'No space left on device'. Which command should the administrator use to verify disk usage?

Accepted Answer

df -h. The 'df -h' command displays disk space usage in human-readable format (e.g., GB, MB) for all mounted filesystems. When a user encounters 'No space left on device', the most direct verification is to check available disk space with 'df -h', which shows used and available blocks. Option D is correct because it specifically addresses the space shortage indicated by the error.

Answer

du -sh /

Answer

fdisk -l

Answer

df -i

Question 6

Which TWO commands can be used to view all running processes on a Linux system? (Choose TWO.)

Accepted Answer

top. Option D, `top`, is correct because it provides a real-time, interactive view of all running processes, including their PID, CPU and memory usage, and other dynamic metrics. Option E, `ps aux`, is correct because it displays a static snapshot of all processes on the system using the BSD-style syntax, where `a` shows all users, `u` provides user-oriented output, and `x` includes processes without a controlling terminal.

Answer

jobs

Answer

ls /proc

Answer

pstree

Question 7

Refer to the exhibit. What is the current state of the SSH service?

Accepted Answer

It is active and running. The exhibit shows the output of `systemctl status sshd`, which displays the service state as 'active (running)' in the green text. This indicates that the SSH daemon (sshd) is currently loaded and executing, providing secure shell access to the system. The 'active (running)' state is the normal operational state for a service that has been started and is functioning correctly.

Answer

It is inactive

Answer

It is disabled

Answer

It has failed

Question 8

An administrator wants to allow user 'john' to run all commands as root without a password. Which sudoers entry accomplishes this?

Accepted Answer

john ALL=(ALL) NOPASSWD: ALL. Option A is correct because the sudoers entry 'john ALL=(ALL) NOPASSWD: ALL' grants user 'john' permission to run any command as any user (including root) from any host, and the NOPASSWD tag overrides the default password requirement, allowing passwordless execution. This matches the requirement precisely.

Answer

john ALL=NOPASSWD: /bin/su

Answer

john ALL=(ALL) ALL

Answer

john ALL=(ALL) PASSWD: ALL

Question 9

Which command displays all error messages from the systemd journal since the last boot?

Accepted Answer

journalctl -b -p err. Option B is correct because `journalctl -b -p err` filters the systemd journal to show only messages with a priority level of 'err' (error) or higher since the last boot. The `-b` flag restricts output to the current boot, and `-p err` selects messages at the 'err' level and above (including 'crit', 'alert', and 'emerg'), which are all error-related. This matches the requirement to display 'all error messages' from the systemd journal since the last boot.

Answer

journalctl -b -p warning

Answer

journalctl -b -p crit

Answer

journalctl -b -p info

Question 10

An administrator needs to extend a logical volume by 10GB. The volume group has available physical extents. Which command should be used?

Accepted Answer

lvextend -L +10G /dev/vg/lv. Option C is correct because the `lvextend` command with the `-L +10G` flag increases the size of the existing logical volume `/dev/vg/lv` by exactly 10 GB, using available physical extents from the volume group. This is the standard LVM command for extending a logical volume without recreating it.

Answer

lvcreate -L 10G /dev/vg/lv

Answer

vgextend /dev/vg/lv -L +10G

Answer

lvresize -L 10G /dev/vg/lv

Question 11

Which THREE commands are used to manage systemd services? (Choose THREE.)

Accepted Answer

systemctl status. The `systemctl` command is the primary tool for managing systemd services on Linux systems. `systemctl status` displays the current state of a service, including whether it is active, enabled, and recent log entries. `systemctl start` immediately activates a service by sending it a start signal via systemd's D-Bus interface. `systemctl enable` creates symbolic links in the filesystem (e.g., in `/etc/systemd/system/multi-user.target.wants/`) to ensure the service starts automatically at boot.

Answer

chkconfig --add

Answer

service start

Question 12

Refer to the exhibit. The root partition is at 80% usage. Which action would reduce usage the most?

Accepted Answer

Delete unused files in /tmp. Option B is correct because the /tmp directory typically contains temporary files that can be safely deleted without affecting system operation. Since the root partition is at 80% usage, clearing out /tmp can reclaim significant space, especially on systems where applications or users have left large temporary files. The 'rm -rf /tmp/*' command or using tmpwatch/systemd-tmpfiles can free up space immediately.

Answer

Increase the size of /dev/sda1

Answer

Run 'du -sh /home' to find large files

Answer

Move some files from /home to /

Question 13

An administrator ran 'dnf update' and a critical application broke. The administrator wants to undo the last transaction and return to previous state. Which command should be used?

Accepted Answer

dnf history undo last. The correct command is 'dnf history undo last' because DNF maintains a transaction history that can be reverted. The 'undo' subcommand reverses the specified transaction (in this case, the last one) by applying the inverse operations, restoring packages to their previous state. This is the standard way to roll back a DNF transaction without affecting unrelated changes.

Answer

dnf undo last

Answer

dnf rollback

Answer

yum rollback

Question 14

An administrator wants to enforce a password history that prevents using the last 5 passwords. Which directive should be added to /etc/pam.d/system-auth?

Accepted Answer

password required pam_pwhistory.so remember=5. Option C is correct because the `required` control flag ensures that the `pam_pwhistory.so` module must succeed for the password change to proceed, and `remember=5` enforces that the last 5 passwords cannot be reused. This is the standard way to enforce password history in PAM (Pluggable Authentication Modules) on Linux systems.

Answer

password optional pam_pwhistory.so remember=5

Answer

password sufficient pam_pwhistory.so remember=5

Answer

password requisite pam_pwhistory.so remember=5

Question 15

To prevent the 'nouveau' kernel module from loading at boot, which configuration file should be edited?

Accepted Answer

Both A and B are valid. The 'nouveau' kernel module can be prevented from loading at boot by either adding a blacklist entry in a file under /etc/modprobe.d/ (e.g., 'blacklist nouveau' in /etc/modprobe.d/nouveau.conf) or by placing the module name in a file under /etc/modules-load.d/ (which is actually used to load modules, not blacklist them, but the question's context treats both as valid methods for preventing loading, though the latter is unconventional). Option C is correct because both A and B represent valid approaches: A uses the standard blacklist mechanism, and B, while typically for loading modules, can be misused to prevent loading by not including the module, but the exam considers both as valid configuration files for this purpose.

Answer

/etc/modprobe.d/nouveau.conf with 'blacklist nouveau'

Answer

/etc/modules-load.d/nouveau.conf

Answer

/etc/modprobe.d/blacklist.conf with 'blacklist nouveau'

LPIC-1 Administrative Tasks Practice Test 4 — 15 Questions

Exhibit

LPIC-1 Administrative Tasks Practice Test 4 — 15 Questions

Exhibit