LPIC-1 Practice Test 13 — 15 Questions

Question 1

A system administrator wants to configure NTP client on a server running systemd and using systemd-timesyncd. Which file should be edited to set the NTP server?

Accepted Answer

/etc/systemd/timesyncd.conf. On a system using systemd-timesyncd, the NTP server configuration is stored in /etc/systemd/timesyncd.conf. This file is read by the systemd-timesyncd service to determine which NTP servers to synchronize with. Editing this file is the correct method for configuring NTP clients under systemd.

Answer

/etc/chrony.conf

Answer

/etc/ntp.conf

Answer

/etc/ntp/ntp.conf

Question 2

Which THREE locations are used to configure package repositories on a typical Linux system? (Choose three.)

Accepted Answer

/etc/zypp/repos.d/. /etc/zypp/repos.d/ is the directory where SUSE's Zypper package manager stores repository configuration files (each .repo file defines a repository's URL, GPG keys, and other settings). This is the standard location for configuring repositories on openSUSE and SUSE Linux Enterprise systems.

Answer

/etc/apt.conf.d/

Answer

/etc/pacman.d/

Question 3

A Linux administrator needs to find all files in the /var/log directory that are larger than 10 MB and have not been accessed in the last 30 days. The administrator also wants to delete these files to free up space. Which command will accomplish this safely, prompting for confirmation before each deletion?

Accepted Answer

find /var/log -type f -size +10M -atime +30 -exec rm -i {} \;. The find command with -atime +30 correctly identifies files not accessed in the last 30 days. Combining -size +10M filters for files larger than 10 MB. The -exec rm -i {} \; ensures interactive deletion, prompting for each file. This satisfies the size, access time, and safety requirements. The other options either use the wrong time attribute or delete without confirmation.

Answer

find /var/log -type f -size +10M -mtime +30 -exec rm -i {} \;

Answer

find /var/log -type f -size +10M -atime +30 -delete

Answer

find /var/log -type f -size +10M -ctime +30 -exec rm -i {} \;

Question 4

A system administrator runs a script that contains the line: trap 'echo "Cleaning up..."' EXIT. The script is executed and then receives SIGINT (Ctrl+C) before normal completion. What happens?

Accepted Answer

The trap on EXIT is executed because SIGINT causes the shell to exit.. The EXIT trap runs when the shell exits, regardless of whether the exit is normal or caused by a signal that terminates the shell. When SIGINT is received and not otherwise trapped, the shell exits, triggering the EXIT trap before termination. This makes EXIT suitable for cleanup actions such as removing temporary files.

Answer

The trap on EXIT is ignored because the script was interrupted by a signal.

Answer

The trap on EXIT is executed only if the script completes normally.

Answer

The script continues running because SIGINT is trapped and ignored by default.

Question 5

Based on the exhibit, what is the most likely cause of the SSH service failure?

Accepted Answer

Another service is already listening on port 22.. The exhibit shows that the sshd service failed to start because the address (0.0.0.0:22) is already in use. This indicates that another process is already bound to port 22, preventing sshd from binding to it. Therefore, the most likely cause is that another service is already listening on port 22.

Answer

The sshd service is disabled.

Answer

The firewall is blocking port 22.

Answer

The SSH configuration file has a syntax error.

Question 6

A user wants to view the first 10 lines of a log file named /var/log/syslog. Which command should they use?

Accepted Answer

head /var/log/syslog. The head command is designed to output the first part of files, with a default of 10 lines. It is the correct choice for viewing the first 10 lines of a log file. The tail command shows the last lines, while cat and less display the entire file or allow interactive viewing without limiting to the first 10 lines. This is a basic file inspection task in Linux.

Answer

tail /var/log/syslog

Answer

cat /var/log/syslog | more

Answer

less /var/log/syslog

Question 7

A Linux system has two network interfaces: eth0 and eth1. The administrator wants to bond them for increased throughput. Which kernel module is required for bonding?

Accepted Answer

bonding. The bonding driver in Linux allows multiple network interfaces to be aggregated into a single logical interface for increased throughput or redundancy. The correct kernel module is named 'bonding' (loaded via modprobe bonding or compiled into the kernel), which implements the IEEE 802.3ad Link Aggregation standard and other bonding modes. Option B is correct because 'bonding' is the exact module name used in the Linux kernel.

Answer

aggregation

Answer

team

Answer

bond

Question 8

Which THREE are valid fields in a GRUB 2 configuration file (grub.cfg) generated by update-grub? (Choose three.)

Accepted Answer

set root. A is correct because 'set root' is a valid GRUB 2 command used in grub.cfg to specify the root device (e.g., 'set root=(hd0,msdos1)') from which GRUB loads kernel and initrd images. This directive is automatically generated by update-grub based on the system's partition layout.

Answer

password

Answer

chainloader

Question 9

An administrator needs to mount an ISO image file /tmp/image.iso to the directory /mnt/iso. Which command should be used?

Accepted Answer

mount -o loop /tmp/image.iso /mnt/iso. The `-o loop` option tells the mount command to use a loop device, which is required to mount a file (like an ISO image) as if it were a block device. Without the loop option, mount expects a block device path, not a regular file.

Answer

mount -o ro /tmp/image.iso /mnt/iso

Answer

mount -t iso /tmp/image.iso /mnt/iso

Answer

mount /tmp/image.iso /mnt/iso

Question 10

A system administrator is troubleshooting a package dependency issue on a Debian system. Which three commands can be used to display dependency information for a package? (Choose three.)

Accepted Answer

`apt show curl`. The `apt show curl` command displays detailed information about the curl package, including its dependencies, from the APT repository metadata. This is a standard way to view dependency information on Debian-based systems.

Answer

`dpkg --info curl.deb`

Answer

`apt-get check`

Question 11

Which command shows the amount of free and used memory in the system, including swap?

Accepted Answer

free -h. The `free -h` command displays the total, used, and free physical memory (RAM) and swap space in a human-readable format (e.g., GiB, MiB). The `-h` flag ensures output is scaled to appropriate units, making it the direct and correct tool for checking both memory and swap usage.

Answer

top

Answer

df -h

Answer

vmstat

Question 12

Which THREE of the following are correct features of the 'grep' command? (Choose three.)

Accepted Answer

-i makes the search case-insensitive. Option A is correct because grep -i performs a case-insensitive search, so patterns like 'error' will also match 'Error' or 'ERROR'. Option B is correct because grep -v inverts the match, printing only the lines that do NOT contain the specified pattern. Option C is correct because grep -c suppresses normal output and instead prints a count of the matching lines. Option D is not correct because -l lists only the names of files containing matches, while line numbers are shown with -n. Option E is not correct because -r enables recursive searching through directories; regular expression matching is grep's default behavior, not enabled by -r.

Answer

-l prints line numbers of matches

Answer

-r enables regular expression matching

Question 13

Refer to the exhibit. The system administrator wants to determine which package provides the file /etc/passwd. Based on the output, which command would be most appropriate to find the package?

Accepted Answer

`dpkg -S /etc/passwd`. `dpkg -S /etc/passwd` queries the dpkg database to find which installed package owns the specified file. This is the standard Debian/Ubuntu command to map an absolute path to its originating package, making it the most appropriate choice for the administrator's goal.

Answer

`dpkg -L base-passwd`

Answer

`apt-file search /etc/passwd`

Answer

`apt-cache show /etc/passwd`

Question 14

Which TWO commands can be used to set the default boot target (runlevel) in systemd?

Accepted Answer

ln -sf /lib/systemd/system/multi-user.target /etc/systemd/system/default.target. Option E, `systemctl set-default multi-user.target`, is correct because it is the official systemd command that creates or replaces the `/etc/systemd/system/default.target` symlink to point at the desired target, thereby setting the default boot target persistently. Option A, `ln -sf /lib/systemd/system/multi-user.target /etc/systemd/system/default.target`, is also correct because it manually performs the same underlying operation that `set-default` does: replacing the `default.target` symlink so systemd boots into multi-user.target on next boot. Option B, `systemctl isolate multi-user.target`, only switches the running system to that target immediately without changing the persistent default. Option C, `systemctl default multi-user.target`, is not a valid systemd command syntax for setting a default target. Option D, `systemctl enable multi-user.target`, only enables the unit for activation (creating wants symlinks) and does not change the default boot target.

Answer

systemctl isolate multi-user.target

Answer

systemctl default multi-user.target

Answer

systemctl enable multi-user.target

Question 15

A junior administrator needs to install the package 'nginx' on a Debian 12 server, but the required package file is not available in any configured APT repository. The administrator has downloaded the file 'nginx_1.22.1-9_amd64.deb' to the current directory. Which command should be used to install this local package file while automatically resolving and installing any missing dependencies from the configured repositories?

Accepted Answer

apt install ./nginx_1.22.1-9_amd64.deb. The apt command can install a local .deb file when given a path that includes a slash (such as ./filename.deb), and it automatically resolves and installs dependencies from configured repositories. This combines the local installation capability of dpkg with the dependency resolution of APT in a single step. The other commands either fail to resolve dependencies, misinterpret the filename as a package name, or force installation while leaving dependencies broken.

Answer

apt-get install nginx_1.22.1-9_amd64.deb

Answer

dpkg -i nginx_1.22.1-9_amd64.deb

Answer

dpkg --install --force-depends nginx_1.22.1-9_amd64.deb