Final answer:
BACnet is the correct protocol to interconnect HVAC or other systems to a network shared by the fire alarm system.
Step-by-step explanation:
The correct protocol to interconnect HVAC or other systems to a network shared by the fire alarm system is BACnet. BACnet is the correct protocol to interconnect HVAC or other systems to a network shared by the fire alarm system. BACnet stands for Building Automation and Control Networks and is widely used in the building automation industry.
It allows different building systems, including HVAC (Heating, Ventilation, and Air Conditioning) and fire alarm systems, to communicate and share data over a network. BACnet is designed to be an open and interoperable protocol, enabling seamless integration between diverse systems.