What kind of signal does a cable modem primarily transmit?

A cable modem primarily transmits digital signals. This is because its primary role is to convert digital data from a computer into a format that can be sent over cable television lines, which are typically designed for analog signals. However, the data being transferred, whether it’s internet data from your computer, streaming video, or any other digital content, is in a binary format that is inherently digital.

When the cable modem communicates with the internet service provider and the wider internet infrastructure, it does so using digital signaling techniques. Digital signals are less susceptible to noise and interference compared to analog signals, allowing for greater reliability and higher speeds in data transmission. This is crucial for the efficient use of high-speed internet services.

While cable systems do transmit analog signals, the primary function of a cable modem hinges on its ability to handle digital information. Hence, the correct answer recognizes this crucial aspect of its operation.