Cable Internet delivers broadband using a combination of optical fiber and coaxial cables in a system called HFC (Hybrid Fiber-Coaxial). This technology evolved from cable TV networks, expanding their purpose by enabling two-way data communication alongside television signals. This reuse of existing infrastructure often means cable Internet is widely available, especially in urban and suburban areas.
The most important technology enabling high-speed cable Internet is DOCSIS (Data Over Cable Service Interface Specification), which defines the protocols for transmitting data over coaxial cables. Over time, DOCSIS has advanced through multiple versions, from 1.0 to 3.1 and beyond. Modern DOCSIS 3.1 networks support theoretical download speeds of up to 10 Gbps, although typical residential plans allow speeds up to 1-2 Gbps. Upload speeds tend to be lower due to network design, oftentimes maxing out around 100-200 Mbps.
The most important technology enabling high-speed cable Internet is DOCSIS (Data Over Cable Service Interface Specification), which defines the protocols for transmitting data over coaxial cables. Over time, DOCSIS has advanced through multiple versions, from 1.0 to 3.1 and beyond. Modern DOCSIS 3.1 networks support theoretical download speeds of up to 10 Gbps, although typical residential plans allow speeds up to 1-2 Gbps. Upload speeds tend to be lower due to network design, oftentimes maxing out around 100-200 Mbps.
One advantage of cable Internet is its widespread deployment and relative ease of installation. Users usually connect via a cable modem, requiring minimal setup. Cable networks also often support bundled services including TV and phone, making them convenient for households wanting multiple services from a single provider.
Downsides include shared bandwidth impact during peak times, higher latency than fiber, and asymmetrical upload/download speeds. These factors may affect heavy content creators or online gamers who require ultra-low latency and high uploads. Still, for most households, cable remains a fast, reliable, and readily accessible broadband option.