What is 'Digital Twin' technology in the context of IIoT and Industry 4.0?
A Digital Twin is a dynamic computational model of a physical physical device or factory line that continuously absorbs real-time sensor data to simulate performance, predict failures, and optimize operations.
In Cloud of Things (CoT), what is 'Cloudlet' or 'Fog Node'?
Cloudlets and Fog nodes sit between IoT edge devices and distant centralized cloud data centers, offering localized compute power, caching, and real-time responsiveness.
In dynamic IoT resource management, what is time 'Synchronization' critical for?
Time synchronization protocols (e.g., NTP, PTP IEEE 1588) ensure all distributed IoT nodes share a unified time reference essential for logging, time-series data alignment, and TDMA channel scheduling.
What is the main function of an 'IoT Gateway' in Cloud of Things architecture?
IoT Gateways act as protocol translators, edge aggregators, and security firewalls connecting local fieldbus/sensor networks to remote cloud servers.
Which of the following is a major challenge in deploying Cloud of Things (CoT) applications?
Sending large volumes of continuous raw sensor streams directly to distant cloud servers can saturate network bandwidth, introduce unacceptable latency for real-time safety, and violate data privacy laws.