Red hat Certified System Administrator (RHCSA)
An IT professional who has earned the Red Hat Certified System Administrator (RHCSA®) is able to perform the core system administration skills required in Red Hat Enterprise Linux environments. The credential is earned after successfully passing the Red Hat Certified System Adinistrator (RHCSA) Exam (Ex200).
Red Hat Certified Engineer (RHCE)
Red Hat Certified Engineer (RHCE®) is a RHCSA who possesses the additional skills, knowledge, and abilities required of a senior system administrator responsible for Red Hat Enterprise Linux® systems.