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31. Volmetric intrusion detection systems are photoelectric, acoustical-seismic, ultrasonic, and microwave. Which can only be used in windowless rooms?
33. It is law for there to be fire sprinkler or suppression systems in buildings. Which type of fire sprinkler has pipes that hold pressurized air in the pipes and does not release until an actual fire is detected?
35. Channels allow for communication to travel from one computer to another. What channel type divides communication channels into individual and independent channels?