Caution: It is not possible to choose RHEL 6 at the LFCS exam anymore. You have to select RHEL 7.
LFCS Exam Presentation
Here you will find resources (tutorials, book review, quiz, sample exams, etc) about the LFCS (Linux Foundation Certified System Administrator) exam for RHEL 6 / CentOS 6.
You can use this website like a study guide if you’ve got already some basic Linux experiences.
The exam is a performance-based exam in English lasting 2 hours, focusing on basic to intermediate system administration from the command line only. The pass mark is 74%. One free retake per exam purchase is granted. It must be taken within 12 months of the date of the original exam purchase.
You need to choose between 3 Linux distributions (CentOS 6.4, OpenSUSE 13.1 and Ubuntu 14.04) before the beginning of the exam.
A webcam, a microphone and the Chrome browser are required. A compatibility check tool is available.
You can take the exam in any quiet location. Your session will be remotely monitored by a proctor.
The exam may be scheduled anytime within 12 months of purchase. The cost of the exam is $300 and is valid for 2 years.
By achieving or renewing a higher-level certification (typically LFCE), you automatically extend the validity of your lower-level certification.
All the exam details are available in the candidate handbook.
Source: Linux Foundation website.
Don’t forget to check the page about Linux certifications.