Know These Terms

Operating Systems & Environments

Operating system - software that provides a computer's core functions, including managing hardware, files, and applications
Windows - a widely used operating system developed by Microsoft
macOS - an operating system used on Apple computers (Macs)
Linux - an open-source operating system commonly used on servers and development systems
Administrator - a user account with elevated permissions to create, delete, or modify system settings and files
System files - files required by the operating system and not intended to be modified by users

File name - the full name of a file, including its extension (or the portion before the extension when context is clear)
File extension - the suffix at the end of a file name that indicates file type (for example: doc, xls, md, html)
Folder / directory - a container used to organize files on a computer
Hidden files - files not shown by default in file managers

Context menu - a menu that appears when right-clicking (or control-clicking) an item
Windows File Explorer - the graphical interface used to browse files and folders on Windows
Finder - the graphical interface used to browse files and folders on macOS