Which of the following is NOT a type of sprinkler system mentioned?

A truck-mounted system is not a recognized type of sprinkler system. Sprinkler systems are designed primarily for fixed installations within buildings or certain outdoor spaces to control or suppress fires. The common types include the automatic wet system, which is filled with water at all times and activates upon detection of heat; the automatic dry system, which remains empty until needed, using pressurized air to keep the pipes dry until a fire triggers the release of water; and the deluge system, which opens all nozzles simultaneously, ideal for high-hazard areas where a large volume of water is required quickly.

Truck-mounted systems, while they may assist in fire suppression, do not function as traditional fixed-installation sprinkler systems. Thus, understanding the distinctions helps clarify the roles and applications of various fire suppression systems.