RHCSA Software Package Management Questions and Answers

Question 1

A script is failing because it cannot find the command `/usr/sbin/semanage`. A system administrator needs to determine which package provides this file so it can be installed. Which of the following commands will accomplish this?

Accepted Answer

dnf whatprovides /usr/sbin/semanage

Answer

The `dnf whatprovides` (or its alias `dnf provides`) command is used to query repositories to find out which package owns a specific file or capability, even if the package is not currently installed. `dnf search` only searches package names and summaries. `rpm -qf` only works if the package providing the file is already installed. `dnf find-file` is not a valid dnf command.

Question 2

A system administrator needs to install the `nginx` package specifically from the 'epel' repository, which is configured but currently disabled. Which command should be used to perform the installation in a single step?

Accepted Answer

dnf install nginx --enablerepo=epel

Answer

The `--enablerepo` option tells dnf to temporarily enable the specified repository for the current transaction. This is the standard method for installing a package from a repository that is configured but not enabled by default. The other options use incorrect syntax for this operation.

Question 3

A system administrator recently ran several `dnf` updates and installations. To troubleshoot a new issue, they need to see a detailed list of what packages were installed, updated, or removed in the most recent transaction. Which command provides this specific information?

Accepted Answer

dnf history info last

Answer

`dnf history` by itself lists all transactions with their IDs. To see the specific details of a transaction, such as which packages were altered, you use `dnf history info <ID>`. The keyword `last` is a convenient alias for the most recent transaction ID.

Question 4

After installing the `httpd` package, a system administrator wants to list all the files that were placed on the system as part of that specific package. Which of the following commands is used for this purpose?

Accepted Answer

rpm -ql httpd

Answer

The `rpm` command is the underlying package manager and is ideal for querying the local RPM database about installed packages. The `-q` flag is for query, and `-l` lists the files owned by the specified package. The other commands are either syntactically incorrect or perform different functions.

Question 5

A system administrator is setting up a new server and needs to install all the packages required for a graphical administration interface. Which command is the most appropriate for installing the "Server with GUI" environment group?

Accepted Answer

dnf groupinstall "Server with GUI"

Answer

The `dnf groupinstall` command is used to install all the packages that are part of a predefined package group or environment. "Server with GUI" is a standard environment group in Red Hat Enterprise Linux and its derivatives. While `dnf install @'Server with GUI'` also works, `dnf groupinstall` is the explicit and traditional command for this action. The other options use incorrect dnf subcommands or syntax.

RHCSA Exam Practice Test

RHCSA Exam Practice Test

RHCSA Software Package Management Questions and Answers