Final answer:
Customers with active cable service can self-install a Cable Modem, which connects to a coaxial cable to provide internet access. The correct answer is D.
Step-by-step explanation:
Most cable companies allow customers with an active service to self-install a Cable Modem. When you have active cable service, this device is essential for accessing internet services. It converts the analog signals to digital signals that your devices can use to connect to the internet. The process of self-installation mainly involves connecting the modem to a coaxial cable, which is the standard for transmitting cable signals into homes, and then to your computer or router.
Cable networks deliver signals through either coaxial or fiber optic cables. Fiber optic cable installation generally requires professional service due to the complexity of the infrastructure. On the other hand, a drop amplifier is a piece that enhances the signal strength for longer cable runs and is usually not self-installed because it can affect the signal quality for the customer as well as neighboring customers if not properly configured.