Sander van Vugt is an independent Linux trainer, author, and consultant living in the Netherlands. Sander is the author of the best-selling Red Hat Certified System Administrator (RHCSA) Complete Video Course and the Red Hat Certified Engineer (RHCE) Complete Video Course. He has also written numerous books about different Linux-related topics and many articles for Linux publications around the world. Sander has been teaching Red Hat, Linux+, and LFCS classes since 1994. As a consultant, he specializes in Linux high-availability solutions and performance optimization. You can find more information about Sander on his website at http://www.sandervanvugt.com. For more information about RHCSA certification and additional resources, visit the author's Red Hat Certification page at http://www.rhatcert.com/.