An administrator attempts to install the package “named.9.3.6-12-x86_64.rpm” on a server. Even
though the package was downloaded from the official repository, the server states the package
cannot be installed because no GPG key is found. Which of the following should the administrator
perform to allow the program to be installed?

A.
Download the file from the program publisher’s website.

B.
Generate RSA and DSA keys using GPG.

C.
Import the repository’s public key.

D.
Run sha1sum and verify the hash.