Exam Preparation

there is two track of certification
standard track

The Standard Track consists of three courses -- RH033, RH133, RH253 -- and is aimed at persons who need more review of key concepts or who are new to both UNIX and Linux.
RH033 Red Hat Linux Essentials targets IT professionals with no prior UNIX or Linux experience, and covers skills to prepare for RH133, including shell and command line essentials.
RH133 Red Hat linux Administration are designed for those wanting to prepare for professional responsibilities as a Linux systems administrator at the Technician level. You'll learn all the skills required to manage a Linux workstation and attach it to a corporate network, including configuration of client-side network services. Prerequisites include networking fundamentals and internetworking with TCP/IP, widely available from reputable training vendors or through self-study. RH133 includes the RHCT Exam on the last day.

RH253 Red Hat Linux Networking and Security Administration is designed for those who desire to build skills at configuring and administering a Red Hat Linux server running key enterprise network services and security. Prerequisites include RH133 or equivalent skills.

repid track

The Rapid Track consists of one course -- RH300 Red Hat Rapid Track Course (and RHCE Exam) -- and is aimed at persons who are experienced UNIX and Linux users, networking specialists, and system administrators and need specific Red Hat Enterprise Linux training to pass the RHCE Exam (which is included).

Courses you should take:

RH033 Red Hat Linux Essentials
RH131 Red Hat System Administration
or
RH133 Red Hat Linux Administration (and RHCT Exam)
RH253 Red Hat Linux Networking and Security Administration