Although WHM and cPanel can work successfully with numerous different versions of Perl, cPanel Inc. only officially supports one particular version of Perl. You can look for the current version of the cPanel approved Perl installer by going to:http://layer1.cpanel.net/.
You should use that version unless there is some specific reason you must use some other version. Using an older or newer version of Perl may cause problems with WHM and cPanel, so if you experience issues, make sure you are using the correct version of Perl. You can check this by running the following from a root shell:
This command will show you what version of Perl is installed. If it isn't the latest approved version of Perl from cPanel, ...