What is the primary function of terminals in a utility network?

The primary function of terminals in a utility network is to serve as subnet controllers. Terminals are critical components in managing the flow of utility resources, effectively allowing the network to control how and where resources (such as water, electricity, or gas) are distributed. They facilitate the connection of different network segments, enabling proper functionality and flow regulation within the utility network.

Terminals can represent connection points for network elements and define how these elements interact within the broader network context. This management includes incorporating various features, maintaining the integrity of the network, and ensuring that the flow conditions—be it fluid or electrical—are met according to design specifications.

While some of the other options may present aspects of utility network components, they do not align with the comprehensive functionality of terminals. For example, terminals do not exclusively control water flow, they encompass a wider range of utilities. They do not model features with no physical ports as their primary role is to facilitate connections in a structured manner rather than facilitating random connections. Hence, recognizing terminals as subnet controllers underscores their integral role in maintaining the structured functionality of a utility network.