Internet of Things — Revision Notes

⚡ 30-Second Revision

Checked 18 October 2026.
NISTIR 8259A (May 2020): identification, configuration, data protection, logical access, software update, state awareness.
Sensor measures; actuator changes.
More readings do not remove calibration bias.

2-Minute Revision

Follow physical quantity → sensor → communication → processing → decision or actuator. Check measurement quality and timing before trusting a dashboard. Security includes manageable configuration, limited interfaces, protected data and supported updates. Assign maintenance and response responsibilities; judge the system by a verified service outcome rather than device count.

5-Minute Revision

Draw a tank-level monitoring system and label sensor, gateway, processor and valve actuator. Explain the effect of a sensor reading consistently two units too high. Choose a safe response to communication loss and identify which team owns calibration, software updates and investigation of abnormal readings.

Vyyuha Quick Recall

ICDLUS: Identify devices; Configure safely; Defend data; Limit interfaces; Update software; Show security state.