Internet of Things (IoT) Practice Exam

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How do IoT devices communicate with each other?

A. Through human intervention
B. Via automated protocols
C. Only through Wi-Fi
D. Solely through Bluetooth connections

The correct answer is: B. Via automated protocols

IoT devices communicate with each other primarily via automated protocols, which are essential for enabling seamless data exchange and interaction between devices without the need for human intervention. These automated protocols, such as MQTT, CoAP, and HTTP, facilitate the transmission of data over various networks, allowing devices to send and receive information efficiently. This approach is vital in IoT environments because it supports real-time communication and interoperability among a diverse range of devices, regardless of their underlying technologies or communication standards. The use of automated protocols ensures that devices can react and adapt to changing conditions dynamically, enhancing their overall functionality and user experience. In contrast, the other options imply limitations or modes of communication that do not fully represent how IoT devices operate. While human intervention can occasionally play a role in setting up or managing IoT systems, it is not a primary means of communication. Additionally, although Wi-Fi and Bluetooth are common connection methods for IoT devices, they are not the only means through which devices communicate. Automated protocols enable communication across various network types, including cellular, Ethernet, and other wireless technologies, making them the cornerstone of IoT interactions.