ABOUT THE AUTHORS QUENTIN DOCTER, A+, Network+, IT Fundamentals+, Cloud Essentials+, is an IT consultant who started in the industry in 1994 working in tech support for Packard Bell. Since then, he's worked as a tech and network support specialist, trainer, consultant, and webmaster. During his career, he has achieved certifications from CompTIA, Microsoft, Cisco, Novell, and Sun Microsystems. He has written over a dozen books for Sybex, including the CompTIA IT Fundamentals+ Study Guide and the CompTIA Cloud Essentials+ Study Guide. JON BUHAGIAR, A+, Network+, is an information technology professional with two decades of experience in higher education. During the past 22 years he has been responsible for Network Operations at Pittsburgh Technical College and lead several projects, including virtualization (server and desktop), VoIP, Microsoft 365, and many other projects supporting the quality of education at the college. He has achieved several certifications from CompTIA, Cisco, and Microsoft, and taught many of the certification paths. He is the author of several books, including Sybex's CompTIA Network+ Review Guide.