What is the function of a 'Light Dependent Resistor' (LDR) sensor?
An LDR (photoresistor) changes resistance inversely with light intensity, commonly used in automated streetlights and ambient brightness sensors.
Which architectural concept shifts security enforcement in IoT from traditional network perimeters to strict continuous authentication for every request?
Zero Trust Architecture assumes no device or request is inherently trusted based on network position alone; every access request must be explicitly authenticated, authorized, and encrypted.
Which type of sensor measures rotation angle or angular velocity in automated IoT robotics and drones?
Inertial Measurement Units (IMUs, e.g., MPU-6050) combine 3-axis gyroscopes and 3-axis accelerometers to track orientation, tilt, and angular velocity in robotics and drones.
In IoT middleware architectures, what is the role of an 'Event-Driven Architecture' (EDA)?
Event-Driven Architecture enables decoupled, real-time responses: when a sensor detects an anomaly (event), it triggers immediate processing logic without wasteful continuous polling.
What is the primary function of an 'Analog-to-Digital Converter' (ADC) built inside an IoT microcontroller?
Most physical sensors (temperature, light, pressure) output continuous analog voltage signals. The microcontroller's internal ADC converts these analog voltages into digital numbers for computation.