RHCE Package Management and Software Installation 3

Question 1

Which command displays a list of past DNF transactions including installs, updates, and removals?

Accepted Answer

dnf history list

Answer

dnf log

Answer

dnf transactions

Answer

dnf audit

Question 2

How do you temporarily disable the repository with ID 'epel' for a single DNF command?

Accepted Answer

dnf install pkg --disablerepo=epel

Answer

dnf install pkg --repo=!epel

Answer

dnf install pkg --norepo=epel

Answer

dnf --exclude-repo=epel install pkg

Question 3

Which RPM command extracts files from an RPM package without installing it (similar to extracting a tar archive)?

Accepted Answer

rpm2cpio package.rpm | cpio -idmv

Answer

rpm -ivh --extract package.rpm

Answer

rpm --unpack package.rpm

Answer

rpm -e --extract package.rpm

Question 4

How do you check whether a downloaded RPM file's signature is valid before installing it?

Accepted Answer

Both B and C are correct

Answer

dnf verify-sig package.rpm

Answer

rpm --checksig package.rpm

Answer

rpm -K package.rpm

Question 5

Which command updates all installed packages to their latest available versions in RHEL?

Accepted Answer

Both B and C are correct

Answer

dnf upgrade --all

Answer

dnf update

Answer

dnf upgrade

Question 6

Which command lists all packages belonging to the 'Development Tools' package group?

Accepted Answer

dnf group info 'Development Tools'

Answer

dnf list group 'Development Tools'

Answer

dnf packages --group 'Development Tools'

Answer

dnf grouplist 'Development Tools'

Question 7

Which command cleans all cached DNF package data, metadata, and headers from the local cache?

Accepted Answer

dnf clean all

Answer

dnf flush

Answer

dnf cache clear

Answer

dnf purge-cache