An internet connection is essential for online access, enabling web browsing, streaming, and file transfers. Common types include dial-up (outdated but pioneering), DSL (using phone lines, faster than dial-up), cable internet (via TV cables, common in households), fiber-optic (fastest option for high bandwidth), satellite (useful in remote areas), Wi-Fi (wireless internet through routers), and mobile broadband (4G/5G mobile networks for portability).