Certified Transport Registered Nurse Certification Practice Exam

Which term refers to a communication method that allows transmitting on one frequency and receiving on another frequency?

1. Duplex

2. Simplex

3. Half-duplex

4. Multi-plex

The correct answer is: Duplex

The term that refers to a communication method allowing transmission on one frequency while receiving on another is known as duplex communication. In duplex systems, both the sending and receiving processes can occur simultaneously, which is crucial for efficient communication in many settings, such as in telecommunications or radio communications. In this context, duplex specifically implies that the communication channels are separate and can function independently without interference, allowing for a dynamic and fluid exchange of information. This is particularly useful in nursing and transport scenarios where timely and effective communication is essential for patient safety and operational efficiency. Other terms related to communication methods differ in their functionalities. Simplex communication allows transmission in only one direction and has no capability for feedback or response. Half-duplex also involves communication in both directions but not simultaneously; it requires a switch between sending and receiving, which can introduce delays. Multi-plex refers to a technique of combining multiple signals into one transmission medium to optimize resource usage, but it doesn't specifically address the distinct transmit and receive frequencies that duplex systems do.