Michael Jang, (RHCE, LPIC-2, UCP, Linux+, MCP), author of the popular RHCE Red Hat Certified Engineer Linux Study Guide (Exam RH302) and about 20 other professional technology titles, is currently a full-time writer, specializing in operating systems and networks. His experience with computers goes back to the days of jumbled punch cards. He has written other books on Linux certification, including LPIC-1 in Depth, Mike Meyers Linux+ Certification Passport, and Sair GNU/Linux Installation and Configuration Exam Cram. His other Linux books include Linux Annoyances for Geeks, Linux Patch Management, and Mastering Fedora Core Linux 5. He has also written or contributed to books on Microsoft operating systems, including MCSE Guide to Microsoft Windows 98 and Mastering Windows XP Professional, Second Edition. Harry Foxwell is a principal consultant at Oracles Public Sector division in the Washington, DC area, where he is responsible for solutions consulting and customer education on cloud computing, operating systems, and virtualization technologies. Harry has worked for Sun Microsystems, now part of Oracle, since 1995. Prior to that, he worked as a Unix and Internet specialist for Digital Equipment Corporation; he has worked with Unix systems since 1979 and with Linux systems since 1995.Harry is coauthor of two Sun BluePrints: Slicing and Dicing Servers: A Guide to Virtualization and Containment Technologies (Sun BluePrints Online, October 2005), and The Sun BluePrints Guide to Solaris Containers: Virtualization in the Solaris Operating System (Sun BluePrints Online, October 2006). He coauthored the book Pro OpenSolaris (Apress, 2009), and blogs about cloud computing at http://http://blogs.oracle.com/drcloud/.He earned his doctorate in information technology in 2003 from George Mason University (Fairfax, VA), and has since taught graduate courses there in operating systems, computer architecture and security, and electronic commerce.Harry is a Vietnam veteran; he served as a platoon sergeant in the US Armys 1st Infantry Division in 1968-1969. He was awarded an Air Medal and a Bronze Star.He is also an amateur astronomer and contributing member of the Northern Virginia Astronomy Club. In addition, Harry is a USA Table Tennis (USATT) member and competitive table tennis player. He is also a US Soccer Federation (USSF) soccer referee.For additional information about Harry, please visit his home page: http://cs.gmu.edu/~hfoxwell.