What is the maximum packet frame payload size allowed in an IEEE 802.15.4 MAC layer MPDU frame?
The IEEE 802.15.4 standard defines a maximum Physical Layer Service Data Unit (PSDU) frame length of 127 bytes.
Which communication model is used by WebSockets in WoT for real-time bi-directional streaming between browser portals and devices?
WebSockets (RFC 6455) establish a persistent, full-duplex TCP channel for real-time Web of Things data streams.
In Smart Cities, what IoT system is used to monitor air quality, CO2 levels, and particulate matter (PM2.5 / PM10)?
Air quality IoT nodes deploy gas sensors (MQ series, NDIR CO2 sensors) and optical dust sensors (PM2.5) for urban pollution tracking.
What does 'Zero-Touch Provisioning' (ZTP) mean in large-scale IoT hardware deployment?
ZTP allows field engineers to plug in IoT gateways/nodes and automatically download encrypted credentials and configuration profiles.
Which technology is commonly used to identify and track physical objects in IoT supply-chain applications?
RFID uses radio communication between tags and readers to identify and track physical objects, making it widely used in supply-chain and inventory applications.