LPIC-1 Practice Test 31 — 15 Questions

Question 1

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 2

Which THREE files are used by CUPS to manage printer queues? (Choose THREE.)

Accepted Answer

/etc/cups/classes.conf. CUPS uses /etc/cups/printers.conf to define printer queues and their associated options, /etc/cups/classes.conf to manage printer classes (groups of queues), and /etc/cups/cupsd.conf as the main daemon configuration file that controls access, logging, and other server settings. These three files are directly read by the CUPS daemon to manage and serve printer queues.

Answer

/etc/cups/lpoptions

Answer

/etc/cups/ppd/

Question 3

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 4

Refer to the exhibit. The administrator restarts the sshd service. What is the new main PID after restart?

Accepted Answer

It will be a new, different PID.. When the sshd service is restarted, the old process is terminated and a new process is spawned, resulting in a new main PID. The PID is a unique identifier assigned by the kernel to each process at creation time, and it is never reused immediately after termination. Therefore, the new main PID will be different from the previous one.

Answer

It remains the same.

Answer

1235

Answer

1234

Question 5

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 6

A zombie process appears in the process list. The parent process has PID 1234. Which command will most likely remove the zombie?

Accepted Answer

kill -9 1234. A zombie process is a child process that has terminated but whose exit status has not been read by its parent. The zombie cannot be killed directly because it is already dead; it only remains in the process table until the parent calls wait(). Sending SIGKILL (kill -9) to the parent process (PID 1234) causes the parent to terminate, and the zombie child is then adopted by init (PID 1), which automatically reaps it by calling wait().

Answer

kill -9 <zombie_pid>

Answer

wait <zombie_pid>

Answer

reboot

Question 7

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 8

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 9

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 10

According to the Filesystem Hierarchy Standard (FHS), which directory contains essential system binaries required during boot?

Accepted Answer

/sbin. According to the Filesystem Hierarchy Standard (FHS), /sbin contains essential system binaries required for booting, repairing, and recovering the system. These binaries are critical before /usr is mounted, such as fsck, init, and route. While /bin also contains essential binaries, the FHS specifically designates /sbin for system administration binaries needed during boot.

Answer

/usr/bin

Answer

/usr/local/bin

Answer

/bin

Question 11

A system administrator needs to perform incremental backups of a large directory /data. The backup strategy requires a full backup every Sunday and incremental backups on weekdays. Which tar command satisfies this requirement using the --listed-incremental option?

Accepted Answer

Full: tar -cvf /backup/full.tar -g /var/backup/snapshot /data; Incremental: tar -cvf /backup/incr.tar -g /var/backup/snapshot /data. Option D is correct because the `--listed-incremental` (or `-g`) option in tar creates and uses a snapshot file to track changes between backups. By specifying the same snapshot file for both the full and incremental backups, tar automatically records which files have changed since the last full backup, enabling proper incremental backups without relying on timestamps or file modification times.

Answer

Full: tar -czvf /backup/full.tar.gz /data; Incremental: tar -czvf /backup/incr.tar.gz --after-date '1 day ago' /data

Answer

Full: tar -cvf /backup/full.tar /data; Incremental: tar -cvf /backup/incr.tar -N 'last Sunday' /data

Answer

Full: tar -cvf /backup/full.tar --newer /data; Incremental: tar -cvf /backup/incr.tar --newer /backup/full.tar /data

Question 12

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'

Question 13

A system fails to mount an XFS filesystem with the entry in /etc/fstab. The entry looks correct. Which fstab field might be missing or incorrect?

Accepted Answer

The filesystem type field. The XFS filesystem requires the filesystem type field in /etc/fstab to be explicitly set to 'xfs'. If this field is missing or incorrect (e.g., left blank, set to 'auto', or mistyped as 'ext4'), the mount command will fail because it cannot determine the correct filesystem driver to use. Even if the device, mountpoint, and options appear correct, an incorrect or missing type field prevents the kernel from loading the XFS module and mounting the filesystem.

Answer

The device field

Answer

The options field

Answer

The mountpoint field

Question 14

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 15

A user reports that their cron jobs are not executing. The user has a valid crontab file and can execute the commands manually. Which of the following is the most likely cause of this issue?

Accepted Answer

The cron daemon is not running.. The cron daemon (crond) is responsible for reading crontab files and executing scheduled jobs at the appropriate times. If the cron daemon is not running, no cron jobs will execute, regardless of the validity of the user's crontab file or the user's ability to run the commands manually. This is the most likely cause because it directly prevents the cron system from functioning at all.

Answer

The crontab file uses the wrong time format.

Answer

The user's home directory is missing.

Answer

The user is not in the /etc/cron.allow file.

LPIC-1 Practice Test 31 — 15 Questions

Exhibit

LPIC-1 Practice Test 31 — 15 Questions

Exhibit