The Linux Professional Institute is offering "beta" exams for its "Linux Essentials" program during LinuxTag, May 23-26 in Berlin, Germany
“Linux Essentials” will be publicly launched in June 2012 and measures foundational knowledge in Linux and Open Source Software. The "Beta" exams are offered for free if you wish to assist LPI in developing the exams.
If you pass the beta exam, you will be awarded a "Linux Essentials Certificate of Achievement".
Register link: http://lpievent.lpice.eu/