LPIC-1 Practice Test 27 — 15 Questions

Question 1

Refer to the exhibit. Based on the mount options shown, which filesystem is most likely to store filenames with mixed case and support long filenames?

Accepted Answer

/dev/sdc1. The mount options shown for /dev/sdc1 include 'utf8' and 'codepage=437', which are characteristic of VFAT (or FAT32) filesystems. VFAT supports mixed-case filenames (though it is case-insensitive) and long filenames via the VFAT extension, which stores up to 255 UTF-16 characters. The other filesystems are either ext4 (which also supports mixed case and long names but does not use codepage/utf8 options) or tmpfs (which is RAM-based and not typically mounted with such options).

Answer

/dev/sda2

Answer

/dev/sda1

Answer

/dev/sdb1

Answer

tmpfs

Question 2

Refer to the exhibit. Which file system is full and what is the likely consequence if the administrator does not take action?

Accepted Answer

/dev/sdb1 is full; applications writing to /var may fail.. The exhibit shows that /dev/sdb1, mounted on /var, has 0% available space (100% used). The /var directory stores variable data such as logs, spool files, and temporary files. If /var fills up, critical services like syslog, cron, or package managers (e.g., apt, yum) cannot write to their log or spool files, causing applications that depend on /var to fail. This is why option D is correct.

Answer

Both are full; system will crash.

Answer

/dev/sda1 is full; system may become unstable.

Answer

Neither is full; available space is sufficient.

Question 3

After receiving a compressed tarball archive.tar.gz from a colleague, you want to list its contents without extracting. Which command should you use?

Accepted Answer

tar -tvf archive.tar.gz. The `tar -tvf archive.tar.gz` command lists the contents of a compressed tarball without extracting it. The `-t` option tells tar to list the archive's table of contents, `-v` provides verbose output (showing file permissions, ownership, etc.), and `-f` specifies the archive file. Tar automatically detects and decompresses the gzip compression when reading the file, so no separate decompression step is needed.

Answer

tar -xzf archive.tar.gz

Answer

tar -cvf archive.tar.gz

Answer

gzip -d archive.tar.gz | tar -t

Question 4

A small business runs a web application on a Linux server that uses Apache to serve dynamic content via PHP-FPM. The server currently uses the default Apache configuration, but the administrator wants to improve security by limiting access to the server's administrative interface (located at /admin) to only the local network (192.168.1.0/24). The administrative interface is accessed via a separate VirtualHost on port 443. The administrator has created a new VirtualHost configuration file for the admin site. However, after reloading Apache, users from outside the local network can still access the /admin page. The administrator has verified that the VirtualHost is being parsed and that mod_authz_core is enabled. Which of the following actions would most likely resolve the issue?

Accepted Answer

Add the following inside the block for the admin site: Require ip 192.168.1.0/24 . Option A is correct: The block with Require ip restricts access to the /admin directory. Option B adds authentication but not IP restriction. Option C adds SSL but doesn't restrict. Option D might allow all. The issue is likely missing IP restriction directives inside the VirtualHost.

Answer

Add the following to the server's iptables:
iptables -A INPUT -p tcp --dport 443 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP

Answer

Add the following inside the block: Require valid-user AuthType Basic AuthUserFile /etc/httpd/.htpasswd

Answer

Set the DocumentRoot of the default VirtualHost to /var/www/admin.

Question 5

Refer to the exhibit. The remount command fails. What is the most likely cause?

Accepted Answer

The fstab entry lacks the 'noauto' option but the device is not currently mounted.

Answer

The filesystem type is wrong.

Answer

The filesystem is not mounted.

Answer

The mount point /data does not exist.

Question 6

Refer to the exhibit. The system fails to boot with an error 'UUID=e5f6g7h8 not found'. Which is the most likely cause?

Accepted Answer

The initramfs does not contain the necessary filesystem modules.

Answer

The fstab entry for /boot is incorrect.

Answer

The root filesystem is corrupted.

Answer

The disk order changed, so /dev/sda2 is no longer the correct device.

Question 7

Refer to the exhibit. A user tries to execute a script on a mounted filesystem but gets a permission denied error. The script has execute permissions. What is the most likely cause?

Accepted Answer

The filesystem is mounted with the 'noexec' option.. The mount options include 'noexec', which prevents execution of binaries or scripts on that filesystem regardless of file permissions.

Answer

The script is not executable for the user.

Answer

The user does not have read permission on the script.

Answer

The filesystem is full.

Question 8

Refer to the exhibit. The system administrator notices the /var/log partition is nearly full. The syslog file is 2GB. Which command will safely reduce the size of this log file without stopping the logging daemon?

Accepted Answer

> /var/log/syslog. The 'logrotate' utility can be used to rotate logs, but the simplest safe method is to truncate the file using '> /var/log/syslog' or 'truncate -s 0 /var/log/syslog'. Copying or deleting may cause issues with the running process.

Answer

cp /dev/null /var/log/syslog

Answer

rm /var/log/syslog && touch /var/log/syslog

Answer

mv /var/log/syslog /var/log/syslog.old

Question 9

Refer to the exhibit. An administrator wants to mount /dev/sda4 persistently by its UUID. Which line should be added to /etc/fstab?

Accepted Answer

UUID=abc-123 /mnt/data ext4 defaults 0 2. The UUID is 'abc-123', filesystem type is ext4, and the mount point is /mnt/data. The correct fstab entry uses UUID=abc-123.

Answer

UUID=abc-123 /mnt/data ext4 noauto 0 2

Answer

LABEL=data /mnt/data ext4 defaults 0 2

Answer

/dev/sda4 /mnt/data ext4 defaults 0 2

Question 10

Which three commands are commonly used to display information about running processes?

Accepted Answer

top. The `top` command (option A) is a standard Linux utility that provides a real-time, dynamic view of running processes, including CPU and memory usage, and is commonly used for process monitoring. It is a core tool for displaying process information, making it correct for this question.

Answer

pkill

Answer

kill

Question 11

A script uses a here-document to pass multi-line input to a command. Which here-document syntax will prevent variable expansion inside the document?

Accepted Answer

<< 'EOF'. Option D is correct because single-quoting the delimiter (e.g., `<< 'EOF'`) prevents the shell from performing variable expansion and command substitution within the here-document. The shell treats the quoted delimiter literally, so all content between the start and end markers is passed verbatim to the command.

Answer

<< EOF

Answer

<<- EOF

Answer

<< "EOF"

Question 12

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 13

In a bash script, a variable 'file' is set to '/var/log/syslog'. Which expansion will yield the string '/var/log'?

Accepted Answer

${file%/*}. Option C is correct because the `${file%/*}` expansion uses the `%` operator to remove the shortest suffix matching the pattern `/*`, which matches the last slash and everything after it. Since `file` is `/var/log/syslog`, this removes `/syslog`, leaving `/var/log`. This is a standard parameter expansion in bash for stripping a trailing path component.

Answer

${file##*/}

Answer

${file%%/*}

Answer

${file#*/}

Question 14

An administrator needs to identify the device file for the first SATA SSD in a server. Which device file should they use?

Accepted Answer

/dev/sda. The first SATA SSD in a Linux system is typically assigned the device file /dev/sda. SATA drives use the SCSI subsystem via the libata driver, which names them /dev/sdX, with 'a' representing the first detected drive. This is the standard naming convention for SATA SSDs in modern Linux kernels.

Answer

/dev/hda

Answer

/dev/sdb

Answer

/dev/nvme0n1

Question 15

An administrator adds the line 'DenyUsers john' to /etc/ssh/sshd_config and restarts the SSH service. What is the effect?

Accepted Answer

User john cannot log in via SSH.. The 'DenyUsers' directive in /etc/ssh/sshd_config explicitly blocks the specified user(s) from authenticating via SSH. When the SSH service is restarted, the configuration is reloaded, and user 'john' will be denied SSH login attempts at the authentication layer, before any shell or command execution occurs.

Answer

User john can still log in but his commands are logged.

Answer

User john is denied all shell access, including local and console logins.

Answer

All users except john cannot log in via SSH.

LPIC-1 Practice Test 27 — 15 Questions

Exhibit

LPIC-1 Practice Test 27 — 15 Questions

Exhibit