Which of the following defines Baseband Systems?

Baseband systems are defined as communication systems that transmit only one signal on the medium at any given time. This means that the entire bandwidth of the medium is used for a single communication session, which allows for high data rates over short distances. In a baseband setup, signals are typically sent in their original form without modulation onto a higher frequency. This is commonly seen in wired networks, such as Ethernet, where the physical medium (like coaxial cable or twisted pair) is utilized to send digital signals directly.

This approach contrasts with broadband systems, which can transmit multiple signals simultaneously by dividing the bandwidth into separate channels. Baseband is characterized by its simplicity and efficiency for short-range communications, which is fundamental in environments like local area networks (LANs). The other options describe characteristics of different technologies or systems and do not apply to the concept of baseband communication.