To configure a YUM repository in RHEL6, you need to create a repository configuration file in the /etc/yum.repos.d/ directory. The file should contain the necessary fields: [base], name, baseurl, and gpgcheck. Although the suggestion and discussions mention some of these points, a complete and correct configuration requires the 'enabled' field to ensure the repository is active. Here is a corrected configuration example for the provided repository URL: In the file /etc/yum.repos.d/base.repo, the content should be - [base] name=base baseurl=http://instructor.example.com/pub/rhel6/dvd gpgcheck=0 enabled=1 After saving this file, you can use 'yum list' to verify the repository configuration.