What do CCTVs, electromechanical devices, and vibration sensors have in common?
Explanation
Answer: B - CCTVs, electromechanical devices and vibration sensors are all intrusion detection devices (IDS). IDSs are used to sense changes that take place in an environment. IDSs are used to detect unauthorized entries and to alert a responsible entity to respond. These systems can monitor entries, doors, window, devices, or removable coverings of equipment. When a change is detected, the IDS device sounds an alarm either in the local area or in both the local area and a remote police or guard station. IDSs can detect changes in the following: beams of light, motion, sound, vibration, electrical circuits, and different types of fields such as microwave, ultrasonic, or electrostatic.
