A cable gateway can replace which broadband cable operator-supplied devices?

A cable gateway is a multifunctional device that combines the functionalities of a cable modem and a digital set-top box into one unit. This integration allows for the receipt of broadband internet signals as well as the decoding of digital television signals, enabling users to access both services through a single device.

The significance of this is that it streamlines equipment for the consumer, reducing the need for multiple devices and simplifying the installation process. Additionally, this all-in-one device can help in managing network connections, including Wi-Fi, further enhancing user experience.

The options that mention only a cable modem or a digital set-top box individually do not fully capture the comprehensive functionality of a cable gateway. It is designed to handle both internet connectivity and digital TV capabilities, which is why the choice stating that it can replace both devices is correct. Furthermore, considering a router and a modem as separate devices misses the point that the gateway can often include router functionality alongside its other features.