Internet of Things (IoT) Practice Exam 2025 – Comprehensive Prep Resource

The correct choice indicates that hydrogen cables are not typically used in data communication within the Internet of Things (IoT). In IoT applications, data transmission requires effective and reliable methods to connect various devices to share information.

Fibre optics, copper cables, and wireless signals are all common mediums for communication. Fibre optics provide high-speed data transfer over long distances with minimal loss, making them suitable for large-scale IoT installations. Copper cables, including twisted pair and coaxial varieties, have been traditionally used for network connectivity and still serve many IoT applications, particularly in local networks. Wireless signals, which encompass technologies such as Wi-Fi, Bluetooth, and cellular networks, are crucial in the IoT landscape, enabling connectivity without physical cables and allowing devices to communicate flexibly and efficiently.

In contrast, hydrogen cables are not recognized as a standard medium for data communication. While hydrogen may play a role in energy systems (such as in fuel cells for power), it does not apply to the data communication needs of IoT devices, which rely on established electrical, optical, or radio wave technologies.