Cliff Krahenbill, known as Professor K, is a technology professional and online instructor. He received his Master of Science degree in Cybersecurity from UMUC in 2015 and a Master of Science degree in Information Technology from Capella University in 2007. Professor K has been working in the field of technology since 1998 as a Microsoft support technician, Microsoft certified trainer, technology support specialist, senior network technology consultant, IT auditor, and most recently, as the owner and operator of his own technology firm, CLK Technology Solutions, located in Tucson, Arizona.nnProfessor K’s expertise in technology lies in designing, building, and supporting network infrastructures and network security. He has been teaching online courses since 2008 and conducts online classes for universities and colleges. He holds numerous technology certifications, which include the following:nMCTS: Windows Server 2008 Active Directory, ConfigurationnMCTS: Windows Server 2008 Applications Infrastructure, ConfigurationnMCTS: Windows Server 2008 Network Infrastructure, ConfigurationnA+, Net+, Security+nnHe spends his spare time working in his woodshop and providing free technical support to the local retirement community in Tucson, Arizona.