Scott Jernigan, CompTIA A+®, CompTIA Network+®, wields a mighty red pen as Editor in Chief for Total Seminars, a major provider of computer and network repair seminars for thousands of organizations throughout the world. He has written, edited, and contributed to dozens of books on computer literacy, hardware, operating systems, networking, and certification.Mike Meyers, CompTIA A+, CompTIA Network+, CompTIA Security+®, is the industry’s leading authority on CompTIA A+ and CompTIA Network+ certifications. He is the president and founder of Total Seminars and the best-selling author of Mike Meyers’ CompTIA A+ Certification All-in-One Exam Guide and CompTIA Network+ Certification All-in-One Exam Guide.Dan Lachance, CompTIA A+, CompTIA Network+, CompTIA Cloud+®, CompTIA Server+®, CompTIA Security+, MCSA, has delivered technical IT training for a wide variety of products for more than 20 years. Dan has worked as a technical editor on a number of certification titles and has authored titles including CompTIA Server+ Certification All-in-One Exam Guide (Exam SK0-004) and CompTIA Security+ Certification Practice Exams, Second Edition (Exam SY0-401).