Linux Professional Institute Certification Level 1 LPIC-1 practice test

A system administrator needs to install a new kernel on a Debian-based system. Which TWO commands can be used to achieve this? (Choose TWO.)

Trap 1: apt-cache search linux-image-5.10.0-20-amd64

apt-cache search only searches package names and descriptions, it does not install.

Trap 2: apt-get update

apt-get update updates the package index files, it does not install packages.

Trap 3: make install

make install is used for compiling and installing software from source, not for package management.

A
apt-cache search linux-image-5.10.0-20-amd64
Why wrong: apt-cache search only searches package names and descriptions, it does not install.
B
apt-get update
Why wrong: apt-get update updates the package index files, it does not install packages.
C
apt-get install linux-image-5.10.0-20-amd64
apt-get install installs packages from repositories, including kernel images.
D
make install
Why wrong: make install is used for compiling and installing software from source, not for package management.
E
dpkg -i linux-image-5.10.0-20-amd64.deb
dpkg -i installs a local .deb package file.

Question 2easymulti select

Which TWO of the following are valid methods to change the default runlevel on a SysV init-based system?

Trap 1: Use the 'runlevel' command to set the default runlevel.

The runlevel command only displays current and previous runlevels, it does not set defaults.

Trap 2: Use 'systemctl set-default' to set the default runlevel.

systemctl is used on systemd-based systems, not SysV init.

Trap 3: Use the 'telinit' command to change the default runlevel.

telinit changes the current runlevel but does not set the default for future boots.

A
Use the 'runlevel' command to set the default runlevel.
Why wrong: The runlevel command only displays current and previous runlevels, it does not set defaults.
B
Edit /etc/inittab to set the initdefault line.
The initdefault line in /etc/inittab defines the default runlevel.
C
Pass the desired runlevel as a kernel parameter at boot time.
Kernel parameters like '1' or 'single' override the default runlevel for the current boot.
D
Use 'systemctl set-default' to set the default runlevel.
Why wrong: systemctl is used on systemd-based systems, not SysV init.
E
Use the 'telinit' command to change the default runlevel.
Why wrong: telinit changes the current runlevel but does not set the default for future boots.

Question 3mediummultiple choice

A system administrator notices that a server with a freshly installed Linux system fails to boot with the error 'No bootable device found'. The server has a single SATA hard disk connected to the motherboard's SATA controller. Which of the following is the most likely cause of this issue?

Trap 1: The root filesystem is formatted with an unsupported filesystem…

An unsupported root filesystem would cause a kernel panic after the bootloader loads, not a boot device error.

Trap 2: The kernel module for the SATA controller is not included in the…

A missing kernel module would cause a kernel panic during boot, not a 'No bootable device found' error.

Trap 3: The GRUB bootloader configuration file is missing or corrupted.

GRUB issues would show a GRUB prompt or error, not a BIOS-level boot device error.

A
The root filesystem is formatted with an unsupported filesystem type.
Why wrong: An unsupported root filesystem would cause a kernel panic after the bootloader loads, not a boot device error.
B
The kernel module for the SATA controller is not included in the initramfs.
Why wrong: A missing kernel module would cause a kernel panic during boot, not a 'No bootable device found' error.
C
The GRUB bootloader configuration file is missing or corrupted.
Why wrong: GRUB issues would show a GRUB prompt or error, not a BIOS-level boot device error.
D
The BIOS boot order is set to a device that does not contain a bootable operating system.
The BIOS attempts to boot from a device that lacks a bootloader, resulting in the error.

Question 4hardmultiple choice

Refer to the exhibit. A system administrator checks the integrity of the passwd package on a CentOS 7 system using rpm -V. Based on the output, what is the most likely cause of the 'missing' line?

Exhibit

Refer to the exhibit.
```
$ rpm -qf /usr/bin/passwd
passwd-0.79-5.el7.x86_64
$ rpm -V passwd
S.5....T.  c /etc/pam.d/passwd
missing   c /etc/security/passwd
```

Trap 1: The package was updated to a newer version that no longer includes…

rpm -V verifies against the installed package database; if the package was updated, it would show different metadata, not 'missing'.

Trap 2: The file /etc/security/passwd was modified after installation.

Modification would show flags like S.5....T, not 'missing'.

Trap 3: The package was not installed completely.

An incomplete installation would likely show multiple missing files, not just one.

A
The package was updated to a newer version that no longer includes this file.
Why wrong: rpm -V verifies against the installed package database; if the package was updated, it would show different metadata, not 'missing'.
B
The file /etc/security/passwd was modified after installation.
Why wrong: Modification would show flags like S.5....T, not 'missing'.
C
The package was not installed completely.
Why wrong: An incomplete installation would likely show multiple missing files, not just one.
D
The file /etc/security/passwd was deleted from the filesystem.
The 'missing' attribute indicates the file is not present on disk.

Question 5hardmulti select

Which THREE commands can be used to display the UUID of a filesystem on a Linux system without superuser privileges? (Choose three.)

Trap 1: dumpe2fs -h

dumpe2fs requires root privileges to read the superblock.

Trap 2: findfs UUID=...

findfs requires root to search for filesystems by UUID.

A
file -s /dev/sda1
file -s reads filesystem superblock and can display UUID for some filesystems; works without root if device permissions allow.
B
blkid
blkid can display UUIDs; though it may need root for some devices, it often works for non-root users on accessible devices.
C
dumpe2fs -h
Why wrong: dumpe2fs requires root privileges to read the superblock.
D
findfs UUID=...
Why wrong: findfs requires root to search for filesystems by UUID.
E
lsblk -f
lsblk -f shows filesystem information including UUID; typically works without root.

Question 6mediummultiple choice

A systems administrator needs to change the permissions of the file /home/user/script.sh so that the owner can read, write, and execute; the group can read and execute; and others have no access. Which command accomplishes this?

Trap 1: chmod 755 /home/user/script.sh

755 gives rwx for owner, r-x for group, and r-x for others, but others should have no access.

Trap 2: chmod 770 /home/user/script.sh

770 gives rwx for owner, rwx for group, and --- for others, but group has write access which is not required.

Trap 3: chmod 741 /home/user/script.sh

741 gives rwx for owner, r-- for group, and --x for others, which does not match.

A
chmod 755 /home/user/script.sh
Why wrong: 755 gives rwx for owner, r-x for group, and r-x for others, but others should have no access.
B
chmod 750 /home/user/script.sh
750 gives rwx for owner, r-x for group, and --- for others, matching the requirement.
C
chmod 770 /home/user/script.sh
Why wrong: 770 gives rwx for owner, rwx for group, and --- for others, but group has write access which is not required.
D
chmod 741 /home/user/script.sh
Why wrong: 741 gives rwx for owner, r-- for group, and --x for others, which does not match.