Internet of Things (IoT) Practice Exam

Which standard is specifically designed for low-power consumption in wireless networks?

1. IEEE 802.11

2. IEEE 802.15.4

3. IEEE 802.3

4. IEEE 802.16

The correct answer is: IEEE 802.15.4

The correct choice is specifically designed for low-power consumption in wireless networks because it refers to the IEEE 802.15.4 standard. This standard is intended for low-rate wireless personal area networks (LR-WPANs) and is particularly suited for applications that require low data rates and minimal power usage, making it ideal for battery-operated devices such as sensors and actuators in the Internet of Things (IoT). The emphasis on low power consumption enables devices using this standard to operate for extended periods without frequent battery replacements, supporting the sustainable functionality of IoT applications. In contrast, the other standards mentioned are aimed at different aspects of networking. IEEE 802.11, commonly known as Wi-Fi, is geared toward high-speed wireless networking but is not optimized for low power. IEEE 802.3 pertains to wired Ethernet standards, focusing on different connectivity needs rather than wireless power efficiency. IEEE 802.16, also known as WiMAX, is designed to support broadband wireless access and provides higher speeds, which is not aligned with the low-power consumption goal.