Communication using a modulated carrier to apply a data signal to a transmission medium in analog form is

ANS:D - Broad band networking

Broadband sends information in the form of an analog signal. Each transmission is assigned to a portion of the bandwidth, hence multiple transmissions are possible at the same time. It is uni-directional, so, in order to send and receive, two pathways are needed.

E.g. - Cable TV, Security Cameras.

In baseband, data is sent as digital signals through the media as a single channel that uses the entire bandwidth of the media.

Baseband communication is bi-directional, which means that the same channel can be used to send and receive signals. E.g. -Ethernet.