Contents:Introduction to computer networks -- Network hardware essentials -- Network topologies and technologies -- Network media -- Network protocols -- Network reference models and standards -- Network hardware in depth -- Network operating system fundamentals -- Server management and administration -- Introduction to network security -- Supporting a small-business network -- Wide area network essentials -- Troubleshooting and support -- Common networking standards -- Older and obsolete technologies -- Network troubleshooting guide -- Networking resources, online and offline -- A step-by-step guide to using server virtualization software.