What is the primary function of a modem in a cable system?

The primary function of a modem in a cable system is to convert analog signals to digital signals for customer devices. In a typical cable system, data is transmitted over coaxial cables in an analog format. The modem receives these analog signals and converts them into a digital format that can be understood by devices such as computers, smartphones, and tablets. This conversion is essential for enabling users to access the internet and utilize various digital services.

Understanding this conversion process is critical because it highlights the role of the modem as a bridge between the cable network and the digital world of the consumer. It ensures that the devices can communicate effectively with the internet infrastructure and other digital networks.

While other options may involve different components or functionalities associated with a cable system or data transmission, they do not accurately describe the fundamental role of the modem in facilitating internet connectivity for the end user.