RHCE Package Management and Software Installation 2 — Questions and Answers
Question 1: Which command displays detailed information (version, size, description) about an installed or available package?
- dnf details httpd
- dnf info httpd (Correct answer)
- rpm -qa httpd
- dnf describe httpd
Correct answer: dnf info httpd
'dnf info <package>' shows comprehensive metadata including version, release, architecture, and description.
Question 2: How do you verify the integrity of all files in an installed RPM package named 'bash'?
- rpm --verify bash
- rpm -V bash
- dnf verify bash
- Both A and B are correct (Correct answer)
Correct answer: Both A and B are correct
Both 'rpm --verify' and its shorthand 'rpm -V' check file attributes (size, permissions, checksums) against the RPM database.
Question 3: What is the correct syntax to add a new repository by providing a URL to a .repo file using DNF?
- dnf repo-add <url>
- dnf config-manager --add-repo <url> (Correct answer)
- dnf addrepo --url <url>
- dnf repository --new <url>
Correct answer: dnf config-manager --add-repo <url>
'dnf config-manager --add-repo <url>' downloads and saves the .repo file into /etc/yum.repos.d/.
Question 4: Which command searches for a package that provides the '/usr/bin/vim' binary?
- dnf search vim
- dnf provides /usr/bin/vim (Correct answer)
- dnf whatprovides vim
- rpm -q --provides vim
Correct answer: dnf provides /usr/bin/vim
'dnf provides <file-or-capability>' searches all packages (installed and available) to find which one provides the specified path or capability.
Question 5: How do you download an RPM package without installing it using DNF?
- dnf get httpd
- dnf install --downloadonly httpd (Correct answer)
- dnf fetch httpd
- dnf pull httpd
Correct answer: dnf install --downloadonly httpd
'dnf install --downloadonly <package>' downloads the RPM and its dependencies to the cache without installing them.
Question 6: Which command lists all available DNF module streams for the 'php' application stream?
- dnf module list php (Correct answer)
- dnf list modules php
- dnf module info php
- dnf streams list php
Correct answer: dnf module list php
'dnf module list <module-name>' displays all available streams for that module along with their status (enabled/disabled/default).
Question 7: How do you undo the last DNF transaction (e.g., the most recent package installation)?
- dnf rollback last
- dnf undo
- dnf history undo last (Correct answer)
- dnf revert last
Correct answer: dnf history undo last
'dnf history undo last' reverses the most recent transaction by uninstalling installed packages or reinstalling removed ones.
RHCE Package Management and Software Installation 2
Which command displays detailed information (version, size, description) about an installed or available package?