LCA Package Management & Software Installation 4

Question 1

What is the purpose of a GPG key in the context of YUM/DNF repositories?

Accepted Answer

To verify the authenticity and integrity of downloaded packages

Answer

GPG keys allow the package manager to verify that packages come from the claimed publisher and haven't been tampered with.

Question 2

Which command installs a .deb package file directly using dpkg?

Accepted Answer

dpkg -i package.deb

Answer

dpkg -i (install) installs a .deb package file directly, bypassing the apt repository system.

Question 3

What is the role of 'createrepo' command on RPM-based systems?

Accepted Answer

Creates repository metadata from a directory of RPM files

Answer

createrepo generates the repodata/ directory with XML metadata that makes a directory of RPMs usable as a YUM/DNF repository.

Question 4

Which file would you edit to disable a specific YUM/DNF repository temporarily?

Accepted Answer

The .repo file in /etc/yum.repos.d/ and set enabled=0

Answer

Setting 'enabled=0' in the repository's .repo file disables it without removing the configuration.

Question 5

What does 'dpkg -l' output?

Accepted Answer

A table listing all packages with their status, version, and description

Answer

dpkg -l lists all packages known to dpkg with their status codes (ii=installed, rc=removed with config files remaining, etc.).

(LCA) Certified Linux Administrator Practice Test