Glen E. Clarke

Glen E. Clarke, MCSE, MCDBA, MCSD, MCT, CEH, SCNP, CompTIA A+, CompTIA Network+, CompTIA Security+, is an independent trainer and consultant, focusing on network security and Web application development. He has authored and edited more than a dozen certification books, including CompTIA Network+ Certification Study Guide, Fourth Edition.About the Series Editor: Mike Meyers, CompTIA A+, CompTIA Network+, MCP, is the bestselling author of six editions of CompTIA A+ Certification All-in-One Exam Guide and several other computer books. He is the president and founder of Total Seminars, LLC, a major provider of PC and network repair seminars for thousands of organizations throughout the world, and a member of CompTIA.