Chapter 12 – Managing systems support and security. Chapter 12 describes user support, maintenance techniques, and factors that indicate the end of a system’s useful life. This chapter explains IT security concepts, techniques, and tools, and specifically addresses six security levels: physical, network, application, file, user, and procedural security. Chapter 12 also describes risk management, data backup and disaster recovery, and explains future challenges and opportunities that IT professionals will face in a dynamic workplace.
