What is a network address?

• A. A unique number assigned to each building automation controller on a communication network.
• B. An IP address only
• C. A MAC address only
• D. A shared group name

Answer: (A)

A network address is the unique identifier that a device uses on a specific building automation network to receive and route messages. Each controller gets its own address within that network so the system can direct data to the correct device. This is distinct from a MAC address, which is the hardware identifier on the local link, and from an IP address, which is used to route data across different networks. In many building automation setups, the network address sits at the network layer and is separate from the physical hardware address or higher-level IP routing. A shared group name doesn’t uniquely identify a single device, so it isn’t used as the network address.