Linux Installation and Package Management

Refer to the exhibit. After modifying /etc/default/grub to enable serial console output, which command must be run to apply the changes to the GRUB configuration?

A company maintains a private Debian repository for internal packages. A new package 'internal-tool' version 2.0 has been added to the repository, but when users run 'apt-get update && apt-get install internal-tool', the old version 1.0 is still being offered. What is the most likely cause?

You are a Linux administrator for a company that uses a custom RPM-based distribution. The development team has built a new version of the internal tool 'monitor-app' (version 2.0) and placed the RPM package in a local YUM repository located at http://internal.repo/monitor-app-2.0.el7.x86_64.rpm. The repository metadata has been updated using 'createrepo'. On a test server running CentOS 7, you run 'yum update monitor-app' but the system reports 'No packages marked for update'. The currently installed version is 1.0. You verify that the repository is enabled and accessible via 'yum repolist'. What is the most likely cause and the correct course of action?

A technician needs to add the official Debian repository for the 'buster' release. Which line should be added to /etc/apt/sources.list?

A system administrator needs to find out which package installed the file /usr/bin/foo on a Red Hat system. Which command should be used?

A system administrator needs to install a local Debian package file named 'myapp.deb'. Which command should be used?

A system administrator needs to remove a package called 'apache2' from a Red Hat Enterprise Linux system while leaving its configuration files intact. Which command accomplishes this?

You are responsible for maintaining a legacy Red Hat Enterprise Linux 6 server that hosts an internal web application. The application was compiled years ago and relies on an old version of OpenSSL (0.9.8). Due to a security audit, you must update OpenSSL to 1.0.1 but the application fails to run with the new version. The vendor no longer supports the application. You must keep the system secure while keeping the application operational. You have access to the application source code but cannot modify it. What is the best solution?

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?

An RPM-based system reports a file conflict during package installation. Which option to the rpm command will allow the installation to overwrite files from another package?

You are a Linux consultant hired by a university IT department. They have a custom scientific application that must be compiled from source on a cluster of identical workstations running Ubuntu 20.04. The compilation process requires a specific version of a library (libfoo 1.2) that is not available in the standard repositories, but an older version (libfoo 1.0) is available. You must provide instructions for installing libfoo 1.2 without breaking the system. The workstations have no internet access to external repositories; they can only access an internal repository. You have the source code and a .deb package for libfoo 1.2 built previously. Which approach would you recommend?

Which two commands can be used to list all packages that have the string 'kernel' in their name on a Debian system? (Choose two.)

A Debian system has some partially installed packages due to a failed installation. Which TWO commands can help resolve the broken dependencies? (Choose exactly two.)

The exhibit shows output from an RPM query on a RHEL 8 system. The installation time is shown as a Unix timestamp. Which command would display the installation date of the openssh-server package in a human-readable format?

A technician needs to remove a package named 'apache2' along with its configuration files from a Debian system. Which command should be used?

Match each SELinux context component to its purpose.

Which three options are valid ways to install a package 'curl' on a RHEL 8 system? (Choose three.)

An organization uses a custom YUM repository. After adding a new RPM package to the repository, clients running 'yum update' do not see the new package. The repository metadata was regenerated using 'createrepo'. What is the most likely reason the clients are not seeing the update?

Order the steps to configure a Linux system to use a proxy server for HTTP.

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

A DevOps engineer is setting up an automated build pipeline for a Python application on a Debian system. The application must be packaged into a .deb for deployment. The engineer writes a Makefile that creates the package but the final 'dpkg -i' step fails due to unmet dependencies: the application requires python3-requests >= 2.0, but the repositories provide 1.0. The team has a local mirror with custom packages including python3-requests 2.0. The mirror is correctly listed in /etc/apt/sources.list. The engineer runs 'apt-get update' before building, but the dependency resolution still fails. What is the most likely cause?

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?

You are a junior administrator for a company that uses a standard disk image for all Linux servers. The image is based on CentOS 7. You need to ensure that new servers automatically install all available security updates during the first boot. You plan to run a command in a startup script. Which command should you use?

Which command lists all installed packages on a Debian-based system by querying the dpkg database?

A systems administrator downloads a .deb package file but it fails to install due to unmet dependencies. Which command sequence should be used to resolve the dependencies and complete the installation?

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?

Arrange the steps to schedule a cron job that runs a script every day at 2 AM.

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?

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

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.)

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

Which TWO of the following commands can be used to list all installed packages on a Debian-based system?

Based on the exhibit, what does the 'rc' status for the package 'apache2-bin' indicate?

During system startup, GRUB 2 displays a prompt. Which command should be typed at the GRUB prompt to boot the currently selected entry normally?

You are a system administrator for a small company running a web server on Ubuntu 20.04 LTS. The web server application was installed using apt from the official repositories. Recently, a critical security patch was released for the web server package. You run 'apt update' and 'apt upgrade' but the package is not upgraded. You check the package status with 'apt-cache policy <package>' and see that the installed version is 2.4.41-4ubuntu3.6, and the candidate version is the same. The latest patched version in the repository is 2.4.41-4ubuntu3.7. You verify that the system has internet connectivity and that the repository URLs in /etc/apt/sources.list are correct. What is the most likely reason the upgrade is not being offered?

Which TWO commands are used to install packages on a Debian-based system? (Choose two.)

A Linux administrator is troubleshooting a package dependency issue. When attempting to install package 'foo', the package manager reports a missing dependency 'libbar.so.2'. Which of the following is the most appropriate next step?

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?

A system administrator is responsible for a production Debian 10 (buster) server that hosts a critical web application. The application requires the package 'libssl1.1' version 1.1.1 or higher, but the official Debian 10 repository only provides version 1.1.0. The administrator has already attempted to install the newer version from Debian 11 (bullseye) sources, but this caused dependency conflicts with the existing libc6 version. The server cannot be upgraded to Debian 11 due to application compatibility. The administrator needs to resolve this situation without breaking the existing system or introducing unofficial packages. Which of the following is the most appropriate course of action?

A Linux administrator is managing a server that uses RPM-based package management. They need to find which installed package provides the '/etc/ssh/sshd_config' file. Which command should they use?

Which file defines the APT software repositories used by a Debian-based system?

Which THREE package management tools are native to Debian-based Linux distributions? (Choose exactly three.)

A Red Hat system administrator suspects that the files belonging to the 'openssh-server' package have been modified since installation. Which command verifies the integrity of the installed package files?

A Linux administrator wants to update the local package index from all configured repositories on an Ubuntu system. Which command accomplishes this?

A system administrator needs to install a package 'foo' which depends on library 'libbar.so.2' that is not currently installed. The administrator runs `apt-get install foo` and receives an error about unmet dependencies. Which of the following is the most appropriate next step?

A system administrator needs to install the latest version of a package named 'webapp' from a third-party repository that has been added to the system. Which command should be used to update the package list and install the package in one step?

When troubleshooting a problem with a Debian package installation, an administrator wants to see which version of a package would be installed from the configured repositories. Which command displays the candidate version?

A Yellowdog Updater Modified (YUM) transaction that included several package installations and upgrades completed successfully, but a recent change caused a service to break. The administrator wants to revert the entire transaction using its transaction ID. Which command should be used?

Based on the dpkg -l output in the exhibit, what does the 'rc' status indicate for the apache2 package?

A system has multiple APT repositories configured. The administrator needs to ensure that for a specific package, the version from a particular repository is always preferred over others, regardless of version number. Which configuration would achieve this?

An administrator needs to downgrade a package from version 2.0 to version 1.9. Which apt-get command can be used to perform this action?

An administrator needs to install apache2 version 2.4.41-4ubuntu3.4 from the security repository to ensure the latest security patches. Based on the exhibit, which command should they use?

A technician is tasked with installing a package from a third-party repository on a CentOS 7 system. What is the correct first step to add the repository?

Refer to the exhibit. Based on the apt-cache showpkg output, which version of vim would be installed if the administrator runs 'apt-get install vim' without specifying a version?

On a Fedora system, which command is used to update all installed packages to their latest versions?

A developer downloads the source code for a kernel module and attempts to compile it using `make`. The compilation fails with an error indicating that the kernel header files are missing. Which package should be installed to provide the necessary headers on a Debian system?

Refer to the exhibit. Based on the dpkg output, what is the status of the 'ftp' package?

A system administrator wants to compile and install a program from source. After running './configure --prefix=/opt/myapp', the configure script fails with an error about missing 'libssl-dev'. What should the administrator do to resolve this issue?

An administrator wants to remove a package 'apache2' but keep its configuration files on the system. Which command should be used?

Which THREE of the following are valid methods to install a package from a local .deb file?

An openSUSE administrator needs to add a new repository from a URL and refresh the package cache. Which command sequence accomplishes this?

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

An administrator needs to downgrade a package 'apache2' to a specific older version using APT. Which TWO commands can achieve this? (Choose exactly two.)

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?

Which TWO characteristics describe the difference between 'apt-get' and 'aptitude'? (Choose two.)

Match each Linux directory to its standard purpose.

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.)

A sysadmin wants to prevent an APT package from being upgraded automatically but still allow it to be upgraded manually if needed. Which configuration method best achieves this?

A dependency analysis shows that removing package 'libfoo' will also remove 'appA' and 'appB' because they depend on libfoo. The administrator wants to remove libfoo but keep appA and appB. What is the best approach?

Which TWO of the following are Debian package management tools?

Based on the exhibit, the 'custom' repository shows 0 packages. What is the most likely cause?

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

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?

A Debian system has a broken package that was partially installed. Which command will attempt to fix dependencies and configure all unpacked but not configured packages?

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?

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

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?

An administrator wants to prevent a specific package from being upgraded during routine system updates. Which command marks the package as held back?

Refer to the exhibit. A new installation requires the root filesystem to be placed on LVM. Based on the current disk layout, which partition is most suitable for use as an LVM physical volume?

A system administrator installs a new RPM package, but it fails due to a missing library dependency. Which command can best identify the specific dependency that is missing?

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?

An administrator suspects that a critical system file has been modified after installation. Which command can be used to verify the integrity of all installed RPM packages on a RHEL system?