Final answer:
The basic functions of a CAD system include unit status management and emergency message communications, both essential for efficient emergency response.
Step-by-step explanation:
The basic functions of a Computer-Aided Dispatch (CAD) system that a telecommunicator should be able to identify include a variety of features which are essential for emergency response services. One of the core functions of a CAD system is managing unit status, which keeps track of all emergency service units in real-time, showing their availability or current engagement. Another critical function is emergency message communications, ensuring that messages related to apparent emergencies are received, prioritized, and communicated to the appropriate units swiftly and accurately.