I'm in software development field since many years, contributed on much software successfully. But now i realize that I have to do some certification led courses. My new project is on AIX Linux based that's why I want Linux certification. Red had led certification or compTIA Linux+ whatever, because all are vendor neutral certification. Even going forward on this way I downloaded uCertify free questions, almost 15 questions I found are of good quality. Saving of $20 on its product; Prep logic is giving the same number of questions in demo. But big variation of prices confusing me what to opt .