Florida State Paramedic Practice Exam

What characterizes a multiplex system?

1. Transmits voice only

2. Combines multiple signals

3. Transmits data at a lower frequency

4. Requires a central unit for communication

The correct answer is: Combines multiple signals

A multiplex system is characterized by its ability to combine multiple signals into one transmission medium. This allows for the efficient use of bandwidth, as several data streams can be transmitted simultaneously without interference. In a multiplexing setup, various types of data, like voice and video signals, are encoded into a single signal for transmission, which is then decoded back into the original formats at the receiving end. This technology is widely used in telecommunications to optimize the handling of large amounts of information, thus improving system performance and capacity. The other options do not accurately describe the fundamental attribute of a multiplex system. Transmitting voice only and requiring a central unit for communication refer to more specific applications or systems that do not encompass the broader capabilities of multiplexing. Transmitting data at a lower frequency also does not pertain to the defining characteristic of multiplexing, as multiplex systems can operate across various frequencies depending on the technology used.