Dive into a comprehensive 4-hour tutorial on Internet of Things (IoT) in Hindi, covering essential topics for semester exams. Explore the 5-layer IoT architecture, sensing and actuation, fundamental IoT terms, physical and logical design, enabling technologies, and IoT levels. Gain insights into the core IoT functional stack, including cloud, fog, and edge computing. Learn about M2M communication, Wireless Sensor Networks (WSN), and various IoT protocols. Discover industrial applications like SCADA and IIoT, and explore emerging technologies such as autonomous vehicles. Conclude with an introduction to Arduino and Raspberry Pi platforms for IoT development. Access accompanying notes for enhanced learning and exam preparation.