RHCSA: the Linux certification that tests doing, not knowing
Most certification exams ask what you know. Red Hat's ask you to do: RHCSA candidates sit at a live system and complete real tasks — create users, configure storage, fix the boot process — with no multiple choice anywhere.
That format is exactly why employers rate it. An RHCSA on a CV means the person has demonstrably operated a Linux system under exam pressure, which predicts day-one usefulness better than any quiz score.
The syllabus is the daily life of a junior sysadmin: file permissions, systemd services, networking, SELinux, containers with Podman. Master it and every Linux distribution becomes navigable, not just Red Hat's.
Preparation is straightforwardly practical — the official Red Hat System Administration I and II courses build the skills in sequence, and the Rapid Track compresses both for experienced admins. From there, RHCE adds Ansible automation, the single most demanded ops skill of the decade.