LPIC-1 Linux Installation and Package Management Practice Test 5 — 15 Questions

Question 1

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 2

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 3

Refer to the exhibit. An administrator is trying to install Google Chrome but receives a GPG error. Which command should be run to add the repository's GPG key?

Accepted Answer

`wget -qO- https://dl.google.com/linux/linux_signing_key.pub | sudo apt-key add -`. It downloads the Google Linux signing key from the official URL and pipes it directly into `apt-key add`, which imports the key into APT's trusted keyring. This resolves the GPG error by allowing APT to verify the authenticity of packages from the Google Chrome repository.

Answer

`gpg --import https://dl.google.com/linux/linux_signing_key.pub`

Answer

`apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <keyid>`

Answer

`dpkg --add-key google`

Question 4

Refer to the exhibit. An administrator wants to verify the integrity of the kernel-core package by checking its signature. Which command is used?

Accepted Answer

`rpm -K kernel-core`. `rpm -K` (or `rpm --checksig`) is the command used to verify the GPG signature of an RPM package, ensuring its integrity and authenticity. This checks the package's cryptographic signature against the imported GPG key, confirming it has not been tampered with.

Answer

`rpm -qa kernel-core`

Answer

`rpm -q --changelog kernel-core`

Answer

`rpm -V kernel-core`

Question 5

A user downloaded a Debian package file named 'software.deb'. Which command should be used to install it?

Accepted Answer

dpkg -i software.deb. The correct command is `dpkg -i software.deb` because `dpkg` is the low-level package manager for Debian-based systems that directly installs `.deb` files. The `-i` flag tells `dpkg` to install the specified package file from the local filesystem, which is exactly what is needed when you have a downloaded `.deb` file.

Answer

rpm -ivh software.deb

Answer

apt install software.deb

Answer

apt-get install software.deb

Question 6

An administrator added a new APT repository to sources.list. Which command must be run to make the system aware of the packages from that repository?

Accepted Answer

apt update. After adding a new APT repository to sources.list, you must run 'apt update' (or 'apt-get update') to refresh the local package index from all configured repositories. This command downloads the latest package lists from the repository's Release and Packages files, making the system aware of available packages and their versions. Without this step, APT will not know about the new repository's packages, and subsequent install or upgrade commands will fail to find them.

Answer

apt-get upgrade

Answer

apt upgrade

Answer

apt-cache search

Question 7

A user compiling software from source successfully runs './configure' and 'make', but the resulting binaries are not in the PATH. Which command should be run to install them system-wide?

Accepted Answer

make install. The 'make install' command copies binaries to standard directories (e.g., /usr/local/bin). 'make' only compiles, 'make all' is default, 'make clean' removes temporary files.

Answer

make

Answer

make all

Answer

make clean

Question 8

During boot, a server loads the wrong kernel. Which file should the administrator modify to change the default kernel in a standard GRUB 2 configuration?

Accepted Answer

/etc/default/grub. In a standard GRUB 2 configuration, the default kernel is selected by setting the GRUB_DEFAULT variable in /etc/default/grub. After modifying this file, the administrator must run update-grub (or grub-mkconfig) to regenerate the /boot/grub/grub.cfg file, which is the actual configuration read by the bootloader. This two-step process separates user-facing settings from the bootloader's runtime configuration.

Answer

/boot/grub/grub.conf

Answer

/etc/grub.d/

Answer

/boot/grub/grub.cfg

Question 9

After a failed package upgrade, a Debian system shows 'unmet dependencies' when trying to install any new software. What is the most appropriate command to fix this condition?

Accepted Answer

apt-get install -f. The 'apt-get install -f' command (option B) is the correct fix because it invokes the '--fix-broken' option, which automatically resolves unmet dependencies by either installing missing packages or removing partially installed ones. This is the standard Debian/APT tool for repairing a broken package state after a failed upgrade, as it reads the dpkg database and corrects inconsistencies without manual intervention.

Answer

Edit /var/lib/dpkg/status manually

Answer

dpkg --purge $(dpkg -l | grep ^iU | awk '{print $2}')

Answer

dpkg --force-depends -i *.deb

Question 10

An RPM-based system has a package 'example-1.0' installed, but a newer version 'example-2.0' is available in a repository. Which command will upgrade the package?

Accepted Answer

yum update example. 'yum update example' is the standard command to upgrade a specific package to the latest available version from configured repositories. YUM automatically resolves dependencies and retrieves the newer package from the repository, making it the appropriate tool for upgrading from a repository source.

Answer

rpm -Uvh example-2.0.rpm

Answer

yum check-update example

Answer

yum install example

Question 11

Which TWO commands are used to manage Debian packages? (Choose two.)

Accepted Answer

apt-get. apt-get is the primary command-line tool for handling Debian packages, handling dependency resolution and retrieval from repositories. dpkg is the low-level tool that directly installs, removes, and queries .deb package files without automatic dependency management. Both are essential for Debian-based package management.

Answer

zypper

Answer

yum

Answer

rpm

Question 12

Which TWO directories are commonly used to store source code before compiling? (Choose two.)

Accepted Answer

/usr/src. In Linux, source code for compiling software is conventionally stored in /usr/src (for kernel sources or distribution-provided source packages) and /usr/local/src (for locally compiled software not managed by the package manager). These directories follow the Filesystem Hierarchy Standard (FHS), which designates /usr/src for system-wide source and /usr/local/src for locally installed source code.

Answer

/tmp

Answer

/var/src

Answer

/opt

Question 13

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 14

You are the system administrator of a small office network. The company has a Debian-based server that runs a critical database application. The database package was installed from the official Debian repository. After an ‘apt upgrade’, the database service fails to start. The error log indicates a library version mismatch. You suspect the upgrade updated a shared library that the database depends on, but the database binary was not updated because the repository no longer supports it. The vendor provides a custom .deb package for the database on their website. You need to restore the database functionality as quickly as possible, but you also want to avoid breaking other packages that may depend on the newer library. What should you do?

Accepted Answer

Download the vendor's .deb package and install it using 'dpkg -i' after removing the old database package.. The vendor's custom .deb package is specifically built for the database and its required library versions, ensuring compatibility. Installing it with 'dpkg -i' after removing the old database package avoids conflicts with the newer shared library that other packages depend on, restoring functionality without breaking the system.

Answer

Restore the entire system from a backup taken before the upgrade.

Answer

Downgrade the library to the previous version using 'apt-get install ='.

Answer

Use 'dpkg --force-depends -i' to force installation of the old database binary against the new library.

Question 15

You work for a hosting company that manages hundreds of CentOS 7 servers. Each server runs a standard set of monitoring tools. Your team needs to deploy a custom monitoring agent that is only available as source code (tarball). The agent must be installed on all servers from a central repository. You have set up an internal YUM repository with the compiled RPMs of the agent. On a test server, you run 'yum install custom-agent', but it fails with a message that the package is not found. You verify the package is present in the repository directory and that the createrepo command has been run. Which step is most likely missing?

Accepted Answer

The repository is not being served via HTTP or FTP; it is only available as a local file path.. The scenario states the repository is set up as an internal YUM repository with compiled RPMs, but yum requires the repository to be accessible via HTTP, FTP, or a local file:// path. If the repository is only available as a local file path on the server and not served via a web server (e.g., Apache or Nginx) or FTP, yum will fail to find the package unless the .repo file explicitly uses a file:// URL. Since the question implies a central repository accessed by multiple servers, a local file path without proper serving would not be reachable by yum over the network.

Answer

The GPG key for the repository is not imported.

Answer

The package architecture does not match (e.g., x86_64 package on i386).

Answer

The .repo file references the wrong baseurl hostname.