Knowledge of operating systems (Windows, Mac, and Linux); including OS installation, user account management, security policies, authentication methods, configuration management, updating/patching, access controls, logging and auditing, managing services, virtualization, backup and recovery, scripting, and file system security.
Knowledge of networks, from concepts and terminology to materials and equipment; including elements of network and network technologies, networking software/applications/packages, network topology, OSI model, types of cables, network devices, wired vs wireless networking, remote access, emerging technology, and network security.
Knowledge of devices and peripherals; including phones and tablets, printers and scanners, mice, keyboards, expansion cards, webcams/headsets, speakers/headphones, etc.
