Published at LXer:
Among the most respected vendor-neutral certifications in the industry are those from the Linux Professional Institute (LPI). LPI Level 1 certification (LPIC-1) is the junior-level certification intended to verify the very basic skills needed by a beginning administrator to work with Linux. There are two exams that you must pass, and they consist of questions that are multiple-choice as well as fill-in-the-blank -- the latter question type making the exams much more difficult than those from many other vendors. LPIC-2 certification also requires passing two exams with the same question types, but now the topics are much more advanced and you need to be a knowledgeable administrator to pass.